Screw tap tapping auxiliary device in narrow space
By using a tapping auxiliary device for confined spaces, and by employing a ratchet wrench and tap fixing seat design, the problem of handle interference in confined spaces with traditional tap wrenches is solved, enabling flexible adjustment and stable tapping operations.
Patent Information
- Application Number
- CN202422354705.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-09-26
AI Technical Summary
When tapping in confined spaces, the handle of a traditional tap wrench can easily interfere with the workpiece, increasing processing difficulty and costs.
Design a tapping auxiliary device for confined spaces. The handle is not directly connected to the tap by connecting the ratchet wrench to the tap fixing seat. Instead, the handle is connected to the ratchet part and the intermediate connecting part, which reduces the volume occupied by the handle in confined spaces. The connection stability and anti-displacement limit ring are improved by the snap-fit groove and anti-displacement limit ring.
The design allows for flexible adjustment of the handle position within a confined space, preventing interference between the handle and the workpiece, ensuring the normal operation of tapping, and improving operational flexibility and stability.
Smart Images
Figure CN223670346U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of the preparation hole tapping in assembly process, specifically relates to a tap tapping auxiliary device in narrow space. BACKGROUND
[0002] In the modernization process of machining and product assembly, with the continuous improvement of product quality and precision requirements, the traditional processing mode has been difficult to meet all production needs. Especially in the wide application of high-precision equipment, the details in the process of part manufacturing, such as hole making and tapping, are mostly completed in the part manufacturing stage to ensure the overall precision and performance of the product. However, in the actual product assembly process, there are still some special scenes that require further processing of the assembled parts.
[0003] A common processing requirement is that after the product assembly is completed, due to design or functional requirements, hole making and tapping operations need to be performed in some narrow spaces. Such operations are often limited by space size, making it difficult for conventional processing tools to be used, thereby increasing the processing difficulty and cost. Especially in the application of rivet structure, the rivet hole is difficult to achieve the expected fastening effect due to material deformation, assembly error and other reasons, but the hole diameter has been enlarged and cannot be solved by replacing larger rivets. At this time, changing the rivet hole to a threaded hole and then using a bolt connection becomes a feasible alternative. The common tapping tool is a tap wrench.
[0004] However, the traditional tap wrench is usually designed as a whole, and the handle part is directly fixed to the tail of the tap. When tapping in a narrow space, the handle part is easy to interfere with the workpiece, making it difficult to tap. INVENTION CONTENTS
[0005] In order to solve the technical problem that the handle part of the tap wrench is easy to interfere with the workpiece when tapping in a narrow space in the background art, the utility model provides a tap tapping auxiliary device in a narrow space.
[0006] The utility model discloses a tap tapping auxiliary device in a narrow space, the tap is connected to the tap fixing seat, the tap fixing seat is connected to the ratchet part, and the ratchet part is connected with the handle part through the intermediate connecting part, so that the handle part is not directly connected to the tap, the occupied volume of the handle part in the narrow space is reduced, and when tapping in the narrow space, the handle part is not easy to interfere with the workpiece. The operator can flexibly adjust the position of the handle part to ensure the normal tapping operation.
[0007] To solve the above technical problems, the utility model provides the following technical scheme:
[0008] The utility model provides a tap threading auxiliary device in narrow space, including ratchet wrench body and tap fixed seat, the ratchet wrench body includes ratchet part, intermediate connecting part and handle part, the ratchet part is connected with handle part through intermediate connecting part, tap fixed seat is connected with ratchet part, and tap fixed seat is used for connecting tap.
[0009] In a specific embodiment, a tap mounting hole is formed in the tap fixed seat, and the shape of the tap mounting hole matches the shape of the tail of the tap.
[0010] In a specific embodiment, a shift-preventing limiting ring is connected to the bottom of the tap fixed seat, the outer diameter of the shift-preventing limiting ring is greater than the maximum outer diameter of the tap fixed seat, and the inner diameter of the shift-preventing limiting ring is not less than the diameter of the tap mounting hole.
[0011] In a specific embodiment, a clamping hole is formed in the center of the ratchet part, a plurality of clamping grooves are formed in the inner wall of the clamping hole, and the plurality of clamping grooves are distributed circumferentially along the clamping hole; the tap fixed seat has a polygonal cross section, and the polygonal edge of the tap fixed seat matches the shape of the clamping groove.
[0012] In a specific embodiment, the cross section of the clamping groove is sawtooth-shaped.
[0013] In a specific embodiment, the plurality of clamping grooves are continuously and uniformly distributed circumferentially along the clamping hole.
[0014] In a specific embodiment, the end of the tap fixed seat close to the shift-preventing limiting ring is transitionally inclined.
[0015] In a specific embodiment, a hollow hole is formed in the intermediate connecting part.
[0016] In summary, the utility model has the following beneficial technical effects:
[0017] 1. The tap threading auxiliary device in narrow space of the utility model is connected to the tap fixed seat, the tap fixed seat is connected to the ratchet part, the ratchet part is connected to the handle part through the intermediate connecting part, so that the handle part is not directly connected to the tap, the occupied volume of the handle part in the narrow space is reduced, the handle part is not easy to interfere with the workpiece when tapping in the narrow space, the position of the handle part can be flexibly adjusted by the operator, and the normal tapping operation is ensured.
[0018] 2.The utility model discloses a narrow space tap tapping auxiliary device, the central position of ratchet part is provided with clamping hole, a plurality of clamping grooves are provided on the inner wall of clamping hole, the tap fixing seat is provided with the structure of polygonal cross section, the connection of ratchet part and tap fixing seat is realized through the clamping of tap fixing seat and clamping groove, and convenient operation is realized.
[0019] 3.The utility model discloses a narrow space tap tapping auxiliary device, the bottom of tap fixing seat is connected with anti -migration limiting ring, in the tapping process, it is convenient to prevent tap from deviating or moving due to vibration or reaction force, and the accuracy and stability of tapping are improved. DRAWINGS
[0020] Figure 1 It is the overall structure schematic diagram of the utility model discloses a narrow space tap tapping auxiliary device.
[0021] Figure 2 It is the partial structure schematic diagram of the utility model discloses a narrow space tap tapping auxiliary device, and it is intended to show ratchet wrench body.
[0022] Figure 3 It is the partial structure schematic diagram of the utility model discloses a narrow space tap tapping auxiliary device, and it is intended to show tap fixing seat.
[0023] Mark explanation: 1, ratchet wrench body;11, ratchet part;111, clamping groove;12, intermediate connecting portion;121, hollow hole;13, handle part;2, tap fixing seat;21, tap mounting hole;22, anti -migration limiting ring. DETAILED DESCRIPTION
[0024] The technical scheme of the utility model will be explained further below in combination with the drawings and examples, but the utility model is not limited to the following described embodiments.
[0025] Reference Figure 1 A kind of tap tapping auxiliary device in narrow space, including ratchet wrench body 1 and tap fixing seat 2.Ratchet wrench body 1 includes ratchet part 11, intermediate connecting portion 12 and handle part 13;Ratchet part 11 is connected with handle part 13 by intermediate connecting portion 12;Tap fixing seat 2 is connected with ratchet part 11, and tap fixing seat 2 is used to connect tap.
[0026] The utility model discloses a handle part 13, and the handle part 13 is connected with the middle connecting part 12, and the middle connecting part 12 is connected with the ratchet wheel part 11, and the ratchet wheel part 11 is connected with the tap fixed seat 2, and the tap fixed seat 2 is connected with the tap, so that the tap is installed in the narrow space, and the tapping in the narrow space is realized.
[0027] The utility model discloses a ratchet wrench body 1 is the ratchet wrench that the person skilled in the art is known. Specifically, the ratchet wheel part 11 includes a ratchet wheel, a pawl and a housing. The housing is fixedly connected with the middle connecting part 12; the ratchet wheel and the pawl are both installed in the housing; the ratchet wheel has a plurality of tooth grooves circumferentially; the pawl is kept in contact with the tooth groove by a spring or other elastic elements; the middle connecting part 12 is fixedly connected with the ratchet wheel, and the middle connecting part 12 is fixedly connected with the handle part 13; the housing is provided with a clamping hole at the central position, the tap fixed seat 2 is installed in the clamping hole, and the tap fixed seat 2 is clamped with the housing.
[0028] Before the operator rotates the handle part 13, the elastic element is in a natural state, at which time the pawl is in close contact with the tooth groove; when the operator rotates the handle part 13, the handle part 13 drives the middle connecting part 12 to rotate, and the middle connecting part 12 drives the ratchet wheel to rotate; when the ratchet wheel rotates in the direction of the handle part 13, the elastic element is compressed, and the pawl slides along the tooth groove, thereby allowing the ratchet wheel to rotate smoothly; when the operator stops rotating the handle part 13, the ratchet wheel stops rotating, and the elastic element returns to the natural state, at which time the pawl is in close contact with the tooth groove; such reciprocation realizes tapping operation.
[0029] Referring to Figure 1 , the tap fixed seat 2 is provided with a tap mounting hole 21, and the shape of the tap mounting hole 21 matches the shape of the tap tail. Common tap tail shapes include triangular, quadrilateral, etc. The shape of the tap mounting hole 21 is set according to the shape of the tap tail, so that the tap tail can be fixedly clamped in the tap mounting hole 21.
[0030] Referring to Figure 1 and Figure 2 , the housing of the ratchet wheel part 11 is provided with a clamping hole at the central position, and a plurality of clamping grooves 111 are formed on the inner wall of the clamping hole and are distributed circumferentially along the clamping hole. The tap fixed seat 2 is polygonal in cross section, and the polygonal edge of the tap fixed seat 2 matches the shape of the clamping groove 111. Specifically, the cross section of the tap fixed seat 2 can be quadrilateral, hexagonal, etc. The tap fixed seat 2 is set to an appropriate polygonal structure, so that the tap fixed seat 2 and the clamping groove 111 can be stably clamped.
[0031] Embodiment 1:
[0032] Referring to Figure 3The anti-shifting limiting ring 22 is connected to the bottom of the tap fixing seat 2. The outer diameter of the anti-shifting limiting ring 22 is greater than the maximum outer diameter of the tap fixing seat 2, and the inner diameter of the anti-shifting limiting ring 22 is not less than the diameter of the tap mounting hole 21.
[0033] In the embodiment, the anti-shifting limiting ring 22 is arranged, which can prevent the tap from shifting or moving due to vibration or reaction force during tapping, and improve the accuracy and stability of tapping.
[0034] Embodiment 2:
[0035] Referring to Figure 1 and Figure 2 In the embodiment, the cross section of the clamping groove 111 is sawtooth-shaped.
[0036] In the embodiment, the cross section of the clamping groove 111 is sawtooth-shaped, which increases the contact area and friction between the tap fixing seat 2 and the ratchet part 11 shell, and improves the connection stability between the tap fixing seat 2 and the ratchet part 11 shell.
[0037] Embodiment 3:
[0038] Referring to Figure 1 and Figure 2 In the embodiment, the clamping groove 111 is continuously and uniformly distributed along the clamping hole in the embodiment 2.
[0039] In the embodiment, the clamping groove 111 is continuously and uniformly distributed along the clamping hole, which facilitates the clamping of the tap fixing seat 2 and the ratchet part 11 shell, and at the same time, the clamping groove 111 is uniformly distributed along the ratchet part 11 shell, which ensures that the tap is more uniformly stressed during tapping.
[0040] Embodiment 4:
[0041] Referring to Figure 1 and Figure 3 In the embodiment, one end of the tap fixing seat 2 close to the anti-shifting limiting ring 22 is inclined and transitionally arranged.
[0042] In the embodiment, one end of the tap fixing seat 2 close to the anti-shifting limiting ring 22 is inclined and transitionally arranged, which facilitates the sliding of the tap into or out of the tap mounting hole 21 during installation and disassembly, and at the same time, reduces the friction between the tap and the tap fixing seat 2, and improves the service life of the tap tapping auxiliary device in the narrow space.
[0043] Embodiment 5:
[0044] Referring to Figure 1 In the embodiment, the middle connecting part 12 is provided with a hollow hole 121.
[0045] In the embodiment, the hollow hole 121 of the intermediate connecting part 12 is provided to reduce the weight of the ratchet wrench body 1 and facilitate tapping in a narrow space.
[0046] The working principle of the tap tapping auxiliary device in a narrow space is as follows: when tapping in a narrow space, first, an operator clamps and fixes the tail part of the tap in the tap mounting hole 21; then, the clamping groove 111 is clamped and fixed with the polygonal edge of the tap fixing seat 2; the operator holds the handle part 13 and rotates, the handle part 13 drives the intermediate connecting part 12 and the ratchet part 11 to rotate synchronously, the ratchet part 11 drives the tap fixing seat 2 and the tap to rotate synchronously, and the tapping operation is realized.
[0047] The above are preferred embodiments of the utility model, which do not limit the protection scope of the utility model, so that: equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.
Claims
1. A tapping aid for a tap in a confined space, characterized in that The ratchet wrench body (1) and the tap fixing seat (2) are included. The ratchet wrench body (1) includes a ratchet part (11), an intermediate connecting part (12) and a handle part (13). The ratchet part (11) and the handle part (13) are connected through the intermediate connecting part (12). The tap fixing seat (2) is connected with the ratchet part (11), and the tap fixing seat (2) is used for connecting a tap.
2. The tap threading assist device for use in tight spaces of claim 1, wherein: A tap mounting hole (21) is arranged on the tap fixing seat (2), and the shape of the tap mounting hole (21) is matched with the shape of a tail part of the tap.
3. A tap threading aid for use in a confined space according to claim 2, characterised in that: A shift-preventing limiting ring (22) is connected to the bottom of the tap fixing seat (2). The outer diameter of the shift-preventing limiting ring (22) is greater than the maximum outer diameter of the tap fixing seat (2), and the inner diameter of the shift-preventing limiting ring (22) is not less than the diameter of the tap mounting hole (21).
4. A tap threading aid for use in a confined space according to any one of claims 1 to 3, wherein: A clamping hole is arranged at the central position of the ratchet part (11), and a plurality of clamping grooves (111) are arranged on the inner wall of the clamping hole and are distributed circumferentially. The tap fixing seat (2) is a polygonal structure in cross section, and the polygonal edge of the tap fixing seat (2) is matched with the shape of the clamping groove (111).
5. A tap threading aid for use in a confined space according to claim 4, characterised in that: The cross section of the clamping groove (111) is sawtooth-shaped.
6. A tap threading aid for use in a confined space according to claim 5, characterised in that: The plurality of clamping grooves (111) are continuously and uniformly distributed circumferentially.
7. The tap threading assist device for use in tight spaces of claim 3, wherein: One end of the tap fixing seat (2) close to the shift-preventing limiting ring (22) is arranged in a transition manner.
8. The tap threading assist device for use in tight spaces of claim 1, wherein: The intermediate connecting part (12) is provided with a hollow hole (121).