Intelligent bolt tightening tool for automobile maintenance

Abstract

The utility model relates to the field of automobile maintenance, in particular to an intelligent bolt tightening tool for automobile maintenance, which comprises a tightening arm, one end of the tightening arm extends to form a tightening convex rod, and a guide sleeve for loading a guide bolt is sleeved on the tightening convex rod in a limiting manner. The guide sleeve is further provided with a limiting piece used for further guiding a bolt path. The bolt is guided and clamped through the guide sleeve and the limiting piece, it is guaranteed that the bolt cannot deviate in the moving process, the accuracy of aligning the bolt to an automobile part is improved, stable clamping force is provided by the multiple limiting clamping plates and the abutting arc blocks which are distributed in the circumferential direction, the tedious steps of manual adjustment are reduced, and the production efficiency is improved. And the efficiency of tightening work is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive repair, and in particular to an intelligent bolt tightening tool for automotive repair. Background Technology

[0002] With the development of the automotive manufacturing industry and the advancement of technology, there are many types of connecting bolts inside automobiles, which are widely distributed. Although traditional manual tightening tools are low in cost, they are inconvenient to operate and difficult to guarantee accuracy, which can easily lead to problems such as over-tightening or under-tightening of bolts. This not only affects maintenance efficiency but may also cause bolt damage or safety hazards. In recent years, with the widespread application of intelligent technology in manufacturing, intelligent tightening tools have gradually become a research hotspot. Although there are some intelligent electric tightening tools on the market, most of these tools are general-purpose designs and have not been optimized for the special needs of the automotive repair industry.

[0003] Therefore, based on the above-stated viewpoints, there is still room for improvement in existing technical tools for tightening automotive bolts. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides an intelligent bolt tightening tool for automotive repair, comprising a tightening arm, one end of which extends into a tightening protrusion. A guide sleeve is fitted onto the upper limit of the tightening protrusion for loading and guiding the bolt. The guide sleeve is further provided with a limiting component for further guiding the bolt path. The limiting component includes a connecting ring sleeve fitted onto the outside of the guide sleeve. The connecting ring sleeve is circumferentially limited by several connecting seats and limiting clamps. One end of each limiting clamp is correspondingly limited on the connecting seat by a torsion spring, while the other end is circumferentially enclosed around the connecting ring sleeve to form a limiting and clamping effect on the bolt.

[0005] Preferably, the end of the limiting clamp away from the connecting seat is connected to a pressing arc block, and several pressing arc blocks abut against each other around the connecting ring sleeve and form a ring structure.

[0006] Preferably, the inner edge of the clamping arc block is uniformly provided with a plurality of protrusions.

[0007] Preferably, the distance between the clamping arc blocks and the guide sleeve is set.

[0008] Preferably, the inner edge of the abutting arc block extends towards the central axis of the connecting ring sleeve, so that the inner diameter of the annular structure formed by the abutting arc blocks is smaller than the diameter of the guide sleeve.

[0009] Preferably, the guide sleeve is further provided with a horizontal ring plate located on the upper side of the connecting ring sleeve, and a plurality of return springs are connected between the horizontal ring plate and the connecting ring plate.

[0010] Preferably, the guide sleeve has a spiral guide groove, and a driven guide rod connected to the connecting ring is inserted into the guide groove.

[0011] Preferably, a limiting groove is formed on the opposite side of the limiting clamps, and a plurality of limiting guide rods are provided on the horizontal ring plate corresponding to the limiting groove.

[0012] Preferably, the tightening arm and the guide sleeve are connected by an electric telescopic rod.

[0013] In summary, this application includes at least one of the following beneficial technical effects:

[0014] I. This utility model guides and clamps the bolts through guide sleeves and limiting components, ensuring that the bolts will not deviate during movement, thus improving the accuracy of bolt alignment with automotive parts. Multiple circumferentially distributed limiting clamps and abutting arc blocks provide stable clamping force, reducing the tedious steps of manual adjustment and greatly improving the efficiency of tightening work.

[0015] Second, this utility model applies uniform pressure by having the abutting arc block make multiple contacts with the bolt, thus preventing the bolt from shaking or shifting due to uneven force. The cooperative design of the guide groove and the driven guide rod effectively avoids interference between the external thread of the bolt and the internal thread of the automotive parts, preventing the bolt from becoming misaligned. At the same time, it limits the initial insertion depth of the bolt, ensuring that all bolts have the same tightening effect and improving the reliability of the assembly. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the guide sleeve of this utility model.

[0019] Figure 3 This is a structural schematic diagram of the limiting component of this utility model.

[0020] Figure 4 This is a utility model Figure 3 A magnified view of A in the middle.

[0021] Figure 5 This is a front view of the clamping arc block of this utility model.

[0022] Figure 6 This is a schematic diagram of the driven guide rod of this utility model.

[0023] Figure 7 This is a schematic diagram of the limiting guide rod of this utility model.

[0024] Figure 8 This is a schematic diagram of the limiting clamp of this utility model.

[0025] In the diagram, 1 is the tightening arm; 10 is the tightening protrusion; 11 is the guide sleeve; 13 is the electric telescopic rod; 2 is the limiting component; 20 is the connecting ring sleeve; 21 is the connecting seat; 22 is the limiting clamp; 23 is the abutting arc block; 230 is the protrusion; 24 is the horizontal ring plate; 240 is the return spring; 25 is the guide groove; 250 is the driven guide rod; 26 is the limiting groove; and 260 is the limiting guide rod. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1 To be continued Figure 8 The embodiments of this utility model will be described in detail below.

[0027] This application discloses an intelligent bolt tightening tool for automotive repair, which can adjust the relative position between the bolt to be tightened and the automotive parts, thereby ensuring the stability of the bolt tightening process and ensuring that all bolts have the same tightening effect, avoiding overshooting.

[0028] Reference Figure 1 As shown, an intelligent bolt tightening tool for automotive repair includes a tightening arm 1, one end of which extends into a tightening protrusion 10. A tightening drive end is built into the tightening wall and is connected to the tightening protrusion 10 to drive the tightening protrusion 10 to rotate synchronously, thereby achieving the tightening effect on the bolt. A guide sleeve 11 is provided at the upper limit of the tightening protrusion 10 for loading and guiding bolts. The guide sleeve 11 is also connected to a bolt mounting channel so that external bolts can slide into the guide sleeve 11 for tightening and assembly. The guide sleeve 11 is also provided with a limiting member 2 for further guiding the bolt path.

[0029] In use, the bolt to be tightened is inserted into the guide sleeve 11. The guide sleeve 11 and the limiting member 2 limit and guide the bolt to correctly align it with the car part. Then, the tightening arm 1 drives the tightening cam 10 and the bolt to rotate. At the same time, the tightening cam 10 and the bolt are driven to slide towards the car part, thus achieving the effect of correctly tightening the bolt onto the car part.

[0030] Reference Figure 2 and Figure 3As shown, the limiting component 2 is used to further guide the bolt path; specifically, the limiting component 2 includes a connecting ring sleeve 20 that is fitted on the outside of the guide sleeve 11. The connecting ring sleeve 20 is circumferentially limited by a number of connecting seats 21 and limiting clamps 22. One end of the number of limiting clamps 22 is correspondingly limited on the connecting seat 21 by a torsion spring, and the other end is circumferentially surrounded by the connecting ring sleeve 20 to form a limiting clamping effect on the bolt.

[0031] In use, after the bolt is inserted into the guide sleeve 11, the tightening cam 10 and the bolt are driven to slide synchronously towards the automotive parts, so that the moving bolt applies force to several limiting clamps 22. This causes the limiting clamps 22, which are held together by torsion springs, to deflect away from each other, allowing the bolt shank to slide between the limiting clamps 22. Under the action of the torsion springs, the limiting clamps 22 automatically clamp the bolt tightly, ensuring that it will not shift during movement. This not only improves the accuracy of bolt alignment with automotive parts but also reduces the tedious steps of manual adjustment, greatly improving the efficiency of tightening work. Moreover, the limiting clamps 22, which are distributed circumferentially, can provide stable limiting for the bolt from multiple directions, further ensuring the stability and reliability of the entire tightening process. After the bolt slides into the limiting clamps 22 and is clamped, the tightening cam 10 is driven to slide away from the automotive parts, so that there is a distance between the tightening cam 10 and the bolt.

[0032] Reference Figure 3 As shown, the end of the limiting clamp 22 away from the connected connecting seat 21 is connected to a clamping arc block 23. Several clamping arc blocks 23 abut against each other around the connecting ring sleeve 20 and form a ring structure. In use, after the screw slides between several limiting clamps 22 and clamping arc blocks 23, the clamping arc blocks 23 can apply uniform pressure at multiple contact points to hold the bolt, preventing the bolt from shaking or shifting due to uneven force, thus providing a stable clamping force. It can also play a certain guiding role during the movement of the bolt, guiding the bolt to align more accurately with the automotive parts.

[0033] Reference Figure 3 and Figure 4 As shown, the inner edge of the clamping arc block 23 is evenly provided with several protrusions 230, which increases the friction between the clamping arc block 23 and the bolt surface and improves the stability when clamping the screw.

[0034] Reference Figure 5 and Figure 6 As shown, several clamping arc blocks 23 are spaced apart from the guide sleeve 11.

[0035] Reference Figure 5 and Figure 6As shown, the inner edge of the clamping arc block 23 extends towards the central axis of the connecting ring sleeve 20, so that the inner diameter of the ring structure formed by the clamping arc blocks 23 is smaller than the diameter of the guide sleeve 11. This allows the end face of the clamping arc block 23 to limit the end of the screw, while the shank of the bolt is inserted between the clamping arc blocks 23 and is limited and clamped by the inner arc surface of the clamping arc block 23.

[0036] Reference Figure 7 and Figure 8 As shown, a horizontal ring plate 24 located on the upper side of the connecting ring sleeve 20 is also provided on the guide sleeve 11. Several return springs 240 are connected between the horizontal ring plate 24 and the connecting ring plate. In use, after the shank of the screw is clamped by several abutting arc blocks 23, the several abutting arc blocks 23 are driven to abut against the automotive parts and move the entire device towards the automotive parts. At this time, since the several abutting arc blocks 23 are spaced apart from the guide sleeve 11, the abutting arc blocks 23, the limiting clamping plate 22, the connecting seat 21, the connecting ring plate and the return springs 240 are all subjected to the reaction force of the automotive parts and slide away from the automotive parts, that is, slide closer to the guide sleeve 11. The sliding of the abutting arc plates causes the clamped bolt to slide away from the automotive parts, thereby effectively preventing the front end of the bolt shank from being inserted into the internal thread hole of the automotive parts in advance, and ensuring that all screws assembled on the automotive parts have the same tightening effect.

[0037] Furthermore, referring to Figures 5 to 7 As shown, since the assembly of bolts and automotive parts is usually performed by screwing the external thread of the bolt shank into the internal thread hole of the automotive part, when the tool is driven to move closer to the automotive part, the bolt shank protruding from several clamping sliders will first contact the internal thread hole of the automotive part, causing a portion of the external thread at the front end of the bolt shank to be inserted into the internal thread hole for assembly. At this time, when the clamping block 23 and the bolt are moved away from the automotive part by the reaction force of the tool as a whole, they are easily interfered with by the external and internal threads of the assembled part, making it difficult to slide and causing the bolt to be skewed. Therefore, in order to avoid the above problems, a guide groove 25 with a spiral structure is formed on the guide sleeve 11, and a driven guide rod 250 connected to the connecting ring sleeve 20 is inserted in the guide groove 25.

[0038] When the clamping block 23, bolt, limiting clamp 22, and connecting ring plate are subjected to reaction force and slide towards the guide sleeve 11, the driven guide rod 250 will slide synchronously. The driven guide rod 250 will slide and deflect along the guide groove 25 on the guide sleeve 11, thereby causing the connecting ring plate, limiting clamp 22, clamping block 23, and bolt to deflect by an angle so that the external thread at the front end of the bolt shank is disengaged from the automotive parts.

[0039] Reference Figure 7 and Figure 8 As shown, limiting grooves 26 are respectively formed on the opposite sides of several limiting clamps 22. Several limiting guide rods 260 are provided on the horizontal ring plate 24 corresponding to the limiting grooves 26. The limiting guide rods 260 slide into the limiting grooves 26 to limit the deflection amplitude of the corresponding limiting clamps 22. In the initial state, the limiting guide rods 260 are spaced apart and not inserted into the limiting grooves 26 to allow the limiting clamps 22 to have a certain degree of deflection adjustment.

[0040] In use, after the bolt is placed into the guide sleeve 11, the tightening cam 10 and the screw are driven to slide a distance closer to the automotive part, so that the bolt shank slides into the space between several clamping arc blocks 23 and is clamped. During the process of the bolt shank sliding into the space between the clamping arc blocks 23, a pushing force is applied to the clamping arc blocks 23 to push them away from each other, causing the clamping arc blocks 23 to drive the connected limiting clamp 22 to deflect so that the torsion spring between the clamping arc block 23 and the connecting seat 21 is stressed. At this time, the deflection of the limiting clamp 22 causes the limiting groove 26 on it to abut against the limiting guide rod 260. The limiting guide rod 260 limits the further pushing and separation of the clamping arc block 23 and the limiting clamp 22, thereby limiting the initial insertion depth of the bolt into the automotive part and ensuring that the tightening effect of all subsequent bolts is the same.

[0041] When the driving tool moves closer to the car part, the reaction force of the car part drives several clamping arc blocks 23, limiting clamps 22, connecting seats 21, connecting rings 20 and the limited bolts to slide closer to the guide sleeve 11. This causes the limiting clamps 22 and the limiting grooves 26 on them to move away from the driven guide rod 250, thereby increasing the gap between the driven guide rod 250 and the limiting grooves 26. This facilitates the subsequent driving of the bolt ends limited by the clamping arc blocks 23 to disengage from the bolts and then be tightened onto the car part.

[0042] Reference Figure 1 As shown, the tightening arm 1 and the guide sleeve 11 are connected by an electric telescopic rod 13. The tightening arm 1 and the guide sleeve 11 are respectively connected to the fixed section and the telescopic section of the electric telescopic rod 13 to provide the driving force required to move closer to the automotive parts during the tightening of the bolt. Of course, as an optional implementation, the tightening arm 1 and the guide sleeve 11 can also be driven by other driving methods that can drive the tightening arm 1 and the guide sleeve 11 to slide relative to each other, such as a drive motor or cylinder.

[0043] In use, after the bolt is positioned between several clamping blocks 23, the entire tool is slid towards the automotive part until the clamping blocks 23 or the bolt is against the automotive part. Then, the extension and retraction of the electric telescopic rod 13 drives the tightening arm 1 and the guide to slide relative to each other, which facilitates the subsequent disengagement of the bolt end, which is positioned by the clamping blocks 23, from the tool and tightens it onto the automotive part.

[0044] During operation: First, the bolt to be tightened is inserted into the guide sleeve 11. Under the guidance of the guide sleeve 11 and the limiting member 2, the bolt is initially aligned with the car part. The tightening cam 10 and the bolt slide a distance closer to the car part, so that the bolt shank slides into the space between several limiting clamps 22 and is clamped by the limiting clamps 22 and the abutting arc block 23. At the same time, the tightening screw is separated from the bolt and a distance is separated.

[0045] Step 2: After the bolt shank slides into the limiting clamps 22 and several pressing arc blocks 23 abut against the car parts, the pressing arc blocks 23 drive the bolt to slide away from the car parts and disengage from them, so as to avoid premature engagement of the external thread at the front end of the bolt shank with the car parts.

[0046] Step 3: After driving the bolt away from the car part, drive the tightening cam 10 to contact the end of the bolt again, and then drive the end of the bolt to rotate so as to tighten the bolt onto the car part.

[0047] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bolt intelligent tightening tool for automobile repair, comprising a tightening arm (1), characterized in that: One end of the tightening arm (1) extends a tightening convex rod (10), a guide sleeve (11) is sleeved on the tightening convex rod (10) for loading guide bolt, a limiting piece (2) for further guiding the bolt path is arranged on the guide sleeve (11), the limiting piece (2) comprises a connecting ring sleeve (20) which is sleeved outside the guide sleeve (11), a plurality of connecting seats (21) and limiting clamping plates (22) are circumferentially limited on the connecting ring sleeve (20), one end of the plurality of limiting clamping plates (22) is correspondingly limited on the connecting seat (21) through a torsion spring, and the other end is circumferentially surrounded together with the connecting ring sleeve (20) as the shaft to form a limiting clamping effect on the bolt.

2. The intelligent tightening tool for a bolt for vehicle repair according to claim 1, characterized by: The limiting clamping plate (22) is connected with an abutting arc block (23) away from the connected connecting seat (21), and the plurality of abutting arc blocks (23) are mutually abutted and surrounded into a ring structure with the connecting ring sleeve (20) as the shaft.

3. The intelligent tightening tool for a bolt for vehicle repair according to claim 2, characterized by: The inner edge of the abutting arc block (23) is uniformly provided with a plurality of protruding portions (230).

4. The intelligent tightening tool for a bolt for vehicle repair according to claim 2, characterized by: The plurality of abutting arc blocks (23) are arranged at a distance from the guide sleeve (11).

5. The intelligent tightening tool for a bolt for vehicle repair according to claim 2, characterized by: The inner edge of the abutting arc block (23) extends towards the direction close to the central axis of the connecting ring sleeve (20), so that the inner diameter of the ring structure formed by the plurality of abutting arc blocks (23) is smaller than the caliber of the guide sleeve (11).

6. The intelligent tightening tool for a bolt for vehicle repair according to claim 1, characterized by: The guide sleeve (11) is further provided with a horizontal ring plate (24) located on the upper side of the connecting ring sleeve (20), and a plurality of return springs (240) are connected between the horizontal ring plate (24) and the connecting ring plate.

7. The intelligent tightening tool for a bolt for vehicle repair according to claim 1, characterized by: The guide sleeve (11) is formed with a guide groove (25) of a spiral structure, and a driven guide rod (250) connected with the connecting ring sleeve (20) is inserted in the guide groove (25).

8. The intelligent tightening tool for a bolt for vehicle repair according to claim 1, characterized by: The opposite sides of the plurality of limiting clamping plates (22) are respectively provided with limiting grooves (26), and a plurality of limiting guide rods (260) are arranged on the horizontal ring plate (24) corresponding to the limiting grooves (26).

9. The intelligent tightening tool for a bolt for vehicle repair according to claim 1, characterized by: The tightening arm (1) and the guide sleeve (11) are connected through an electric telescopic rod (13).

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