CN203125396U - Hand-operated torque screw screwdriver - Google Patents
Hand-operated torque screw screwdriver Download PDFInfo
- Publication number
- CN203125396U CN203125396U CN 201220625468 CN201220625468U CN203125396U CN 203125396 U CN203125396 U CN 203125396U CN 201220625468 CN201220625468 CN 201220625468 CN 201220625468 U CN201220625468 U CN 201220625468U CN 203125396 U CN203125396 U CN 203125396U
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- Prior art keywords
- needle roller
- handle
- ball
- base
- screw rotating
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Abstract
A hand-operated torque screw screwdriver comprises a handle, a connecting rod and a rear plug. The rear plug is connected with the tail portion of the handle in a sealing mode. One end of the connecting rod extends into the handle. The end socket of one end, extending into the handle, of the connecting rod is a polygonal ball head. A cavity is arranged in the tail portion of the handle. A clamping structure is arranged in the cavity. The polygonal ball head is clamped in the clamping structure. A roller pin multistation axial clutch structure is arranged in the cavity and located on one side, close to the tail portion of the handle, of the clamping structure. A compressed spring is connected on one side, close to the tail portion of the handle, of the roller pin multistation axial clutch structure, and a compressed spring telescopic adjusting structure is arranged between the other end of the compressed spring and the rear plug. The compressed spring telescopic adjusting structure of the screwdriver can be used for controlling the torque limit of the screwdriver through controlling of a compressed state of the compressed spring. The screwdriver is suitable for rotating requirements of different screws, and enables the screws to be tightly screwed up on the premise of not damaging threads of the screws.
Description
Technical field
The utility model relates to a kind of hand moment of torsion screw rotating tool, especially a kind of hand moment of torsion screw rotating tool that has the axial clutch structure of needle roller multistation.
Background technology
In daily life and activity in production, often use various screw rotating tools, these revolve tool and preset mechanism by the torque drive mechanism in handle, connecting rod, sleeve, the handle and moment of torsion and form, by the people handle is applied revolving force and reach screwing or unscrewing of screw, but, because screw has the limit of bearing torsion, if the operator is too big to the screw applied pressure, will cause the screw of screw to damage the phenomenon that stripped thread occurs.Traditional tool that revolves adopts the radially clutch of multistation cam-type, frictional force is big, the manufacturing expense height, and the many employings of the axial clutch structure of needle roller multistation is two needle roller four stations, be the formula clutch of creeping, the bulb of traditional extension bar is connected with nylon elastic claw or magnet steel, and the former is not durable, the latter produces magnetic damping, and the connection effect of bulb is bad.
The utility model content
Technical problem to be solved in the utility model provides a kind of hand moment of torsion screw rotating tool, this stage clip telescopic adjustment structure of revolving tool is controlled the output torque that revolves tool by the compressive state of control stage clip, can be fit to different screw lock moment requirements, under the prerequisite of not damaging screw thread, screw is screwed.
In order to solve existing technical problem, the technical solution adopted in the utility model is: a kind of hand moment of torsion screw rotating tool, comprise handle, extension bar and back are stifled, described back is stifled to be connected with the tail seal of described handle, one end of described extension bar extend in the described handle, extension bar stretches out on the end of described handle and is set with a sleeve, it is characterized in that, the termination that described extension bar extend into the end in the described handle is bulb in many ways, be provided with cavity in the afterbody of described handle, in this cavity, be provided with snap-in structure, described bulb in many ways is stuck in this snap-in structure, the left side that is positioned at described snap-in structure in described cavity is provided with the plane bearing assembly, a side that is positioned at the close described handle afterbody of described snap-in structure in described cavity is provided with the axial clutch structure of needle roller multistation, side at the close described handle afterbody of the axial clutch structure of this needle roller multistation is connected with a stage clip, is provided with stage clip telescopic adjustment structure between the other end of this stage clip and described back are stifled.
Above-mentioned a kind of hand moment of torsion screw rotating tool, described snap-in structure comprise vexed button and have the actuating sleeve of square hole, and the end that described extension bar stretches into described handle passes the square hole of described actuating sleeve and the termination is stuck in the described vexed button hole of buckleing.
Above-mentioned a kind of hand moment of torsion screw rotating tool, the axial clutch structure of described needle roller multistation comprises the needle roller base, needle roller, ball set, the ball base, steady pin and slip spring abutment, described ball base sheath is contained on the described slip spring abutment, be provided with the groove corresponding with described needle roller at described needle roller base, needle roller is arranged in this groove, the diameter of needle roller is greater than the degree of depth of this groove, described ball base is provided with the arc groove that extends along circumferentially, described ball set is propped up by ball and is erected in this arc groove, the corresponding setting with described ball of described needle roller, described needle roller base contacts with ball on the described ball base by needle roller, and the needle roller base can be with respect to the rotation in circumferentially of described ball base, described slip spring abutment is provided with through hole, the end play of this through hole is greater than the diameter of described steady pin, and described steady pin passes this through hole and fixedlys connected with the shell of described handle.
Above-mentioned a kind of hand moment of torsion screw rotating tool, the quantity of described ball set is even number, the peak of described ball is all in same plane, a plurality of circular gaps have been formed between the adjacent ball in twos in the described ball base arc groove, this a plurality of circular gaps measure-alike, needle roller drops in this circular gap when rotating.
Above-mentioned a kind of hand moment of torsion screw rotating tool, described actuating sleeve and described needle roller base are fixed mutually and link together, and described vexed button is arranged on actuating sleeve and the needle roller base engages in the formed cavity.
Above-mentioned a kind of hand moment of torsion screw rotating tool, described stage clip telescopic adjustment structure comprises adjusts screw and stop nut, described slip spring abutment and described adjustment screw are provided with convex shoulder accordingly, described compression spring sleeve is contained on this convex shoulder, and described adjustment screw is controlled the flexible of stage clip by the rotation move left and right.
Above-mentioned a kind of hand moment of torsion screw rotating tool, described bulb in many ways are six side's bulbs.
Above-mentioned a kind of hand moment of torsion screw rotating tool, described extension bar are six side's extension bars.
Above-mentioned a kind of hand moment of torsion screw rotating tool, described needle roller is preferably the wolfram steel rod.
Above-mentioned a kind of hand moment of torsion screw rotating tool, described handle is made by hydronalium.
The beneficial effects of the utility model are: this stage clip telescopic adjustment structure of revolving tool is controlled the output torque that revolves tool by the compressive state of control stage clip, can be fit to different screw lock moment requirements, under the prerequisite of not damaging screw thread, screw is screwed.
Description of drawings
Fig. 1 is structural representation of the present utility model
Fig. 2 is the schematic diagram of the utility model snap-in structure
Fig. 3 is the schematic diagram of the axial clutch structure of the utility model needle roller multistation
Fig. 4 is the enlarged drawing of the utility model snap-in structure and the axial clutch structure of needle roller multistation
The specific embodiment
Further understand and be familiar with for making architectural feature of the present utility model and the effect reached had, cooperate detailed explanation in order to preferred embodiment and accompanying drawing, be described as follows:
As shown in Figure 1, a kind of hand moment of torsion screw rotating tool, comprise handle 1, extension bar 2 and back stifled 3, back stifled 3 is connected with the tail seal of handle 1, one end of extension bar 2 extend in the handle 1, extension bar 2 stretches out on the end of handle 1 and is set with a sleeve 4, and the termination that extension bar 2 extend into the end in the handle 1 is bulb 21 in many ways, is provided with cavity 11 in the afterbody of handle 1.
As a kind of improvement of the present utility model, as shown in Figure 2, in this cavity 11, be provided with snap-in structure 7, in many ways bulb 21 is stuck in this snap-in structure 7, the left side that is positioned at snap-in structure in cavity 11 is provided with plane bearing assembly 5, snap-in structure 7 comprises vexed button 71 and has the actuating sleeve 72 of square hole, and the end that extension bar 2 stretches into handle 1 passes the square hole of actuating sleeve 72 and termination 21 is stuck in vexed the button in 71 the button hole, and actuating sleeve 72 can drive vexed button 71 and extension bar 2 with respect to 5 rotations of plane bearing assembly.
Further improve as of the present utility model, as Fig. 1, shown in Figure 3, a side that is positioned at close handle 1 afterbody of snap-in structure in cavity 11 is provided with the axial clutch structure 8 of needle roller multistation, side at axial clutch structure 8 close handle 1 afterbodys of this needle roller multistation is connected with a stage clip 6, is provided with stage clip telescopic adjustment structure 9 between the other end of this stage clip 6 and the back stifled 3.
The axial clutch structure 8 of needle roller multistation comprises needle roller base 81, needle roller 82, ball set 83, ball base 84, slip spring abutment 85 and steady pin 86, ball base 84 is sleeved on the slip spring abutment 85, be provided with the groove 87 corresponding with needle roller 82 at needle roller base 81, needle roller 82 is arranged in this groove 87, the diameter of needle roller 82 is greater than the degree of depth of this groove 87, ball base 84 is provided with the arc groove that extends along circumferentially, ball set 83 is located in this arc groove by ball support 88, needle roller 82 and ball 83 corresponding settings, needle roller base 81 contacts with ball 83 on the ball base 84 by needle roller 82, and needle roller base 81 can be with respect to ball base 84 rotation in circumferentially, when rotating, needle roller 82 is in the sliding friction state with ball 83, the quantity of ball set 83 is even number, a plurality of circular gaps have been formed between the adjacent ball in twos in ball base 84 arc grooves, this a plurality of circular gaps measure-alike, needle roller 82 drops in this circular gap when rotating, the peak of ball 83 is all in same plane, needle roller 82 and all be tending towards constant for the frictional force between each ball, when rotating extension bar 2 at every turn, the moment of torsion output valve of extension bar 2 all is in a steady state value, and this revolves the phenomenon of the stripped thread that tool occurs with regard to the tight or tension that revolves of screw threads not occurring in use.
As shown in Figure 4, actuating sleeve 72 and needle roller base 81 are fixed mutually and link together, and vexed button 71 is arranged in actuating sleeve 72 and the formed cavity of needle roller base 81 engagings.Slip spring abutment 85 is provided with through hole 89, and the end play of this through hole 89 is greater than the diameter of steady pin 86, and steady pin 86 passes this through hole 89 and fixedlys connected with the shell of handle 1.
Stage clip telescopic adjustment structure 9 comprises adjusts screw 91 and stop nut 92, slip spring abutment 85 is provided with convex shoulder accordingly with adjustment screw 91, stage clip 6 is sleeved on this convex shoulder, adjust screw 91 and control the flexible of stage clip 85 by the rotation move left and right, by the active force that stretches to control 6 pairs of slip spring abutments 85 of stage clip of stage clip 6.
When the torque limit of this screw rotating tool too hour, adjusting screw 91 is moved to the left, stage clip 6 just is in further compressive state, formed bigger compression stress, slip spring abutment 85 passes to ball 83 on the ball base 84 with compression stress, and when ball 83 contacted with needle roller 82, its contact force became bigger, it is big that thereby the force of sliding friction between needle roller 82 and the ball 83 just becomes, and the extension bar 2 outwards torque of output also will become big thereupon; When not reaching requiring of operation by the adjusting of adjusting screw 91, convertible thicker stage clip reaches needed moment of torsion.
When the torque limit of this screw rotating tool is too big, adjusting screw 91 moves right, stage clip 6 just is in relaxed state, formed littler compression stress, slip spring abutment 85 passes to ball 83 on the ball base 84 with compression stress, and when ball 83 contacted with needle roller 82, its contact force became littler, thereby the force of sliding friction between needle roller 82 and the ball 83 just diminishes, and the output torque of extension bar 2 also will diminish thereupon; When not reaching requiring of operation by the adjusting of adjusting screw 91, convertible thinner stage clip reaches needed moment of torsion.
According to the requirement of different screws, extension bar 2 can be six side's extension bars, and bulb 21 is six side's bulbs in many ways, and extension bar 2 also can be cubic extension bar, all directions extension bar, and bulb 21 also can be cubic bulb and all directions bulb in many ways.
Because the sliding friction number of times of needle roller 82 and ball 83 is more than tens thousand of times, in order to increase the frictional strength of needle roller 82, needle roller 82 is preferably the wolfram steel rod.
In order to increase the service life of revolving tool and the weight that alleviates handle, handle 1 is made by hydronalium.
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and the specification is principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in the claimed scope of the present utility model.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (10)
1. hand moment of torsion screw rotating tool, comprise handle, extension bar and back are stifled, described back is stifled to be connected with the tail seal of described handle, one end of described extension bar extend in the described handle, extension bar stretches out on the end of described handle and is set with a sleeve, it is characterized in that, the termination that described extension bar extend into the end in the described handle is bulb in many ways, be provided with cavity in the afterbody of described handle, in this cavity, be provided with snap-in structure, described bulb in many ways is stuck in this snap-in structure, the left side that is positioned at described snap-in structure in described cavity is provided with the plane bearing assembly, a side that is positioned at the close described handle afterbody of described snap-in structure in described cavity is provided with the axial clutch structure of needle roller multistation, side at the close described handle afterbody of the axial clutch structure of this needle roller multistation is connected with a stage clip, is provided with stage clip telescopic adjustment structure between the other end of this stage clip and described back are stifled.
2. a kind of hand moment of torsion screw rotating tool according to claim 1, it is characterized in that, described snap-in structure comprises vexed button and has the actuating sleeve of square hole, and the end that described extension bar stretches into described handle passes the square hole of described actuating sleeve and the termination is stuck in the described vexed button hole of buckleing.
3. a kind of hand moment of torsion screw rotating tool according to claim 1, it is characterized in that, the axial clutch structure of described needle roller multistation comprises the needle roller base, needle roller, ball set, the ball base, steady pin and slip spring abutment, described ball base sheath is contained on the described slip spring abutment, be provided with the groove corresponding with described needle roller at described needle roller base, needle roller is arranged in this groove, the diameter of needle roller is greater than the degree of depth of this groove, described ball base is provided with the arc groove that extends along circumferentially, described ball set is propped up by ball and is erected in this arc groove, the corresponding setting with described ball of described needle roller, described needle roller base contacts with ball on the described ball base by needle roller, and the needle roller base can be with respect to the rotation in circumferentially of described ball base, described slip spring abutment is provided with through hole, the end play of this through hole is greater than the diameter of described steady pin, and described steady pin passes this through hole and fixedlys connected with the shell of described handle.
4. a kind of hand moment of torsion screw rotating tool according to claim 3, it is characterized in that, the quantity of described ball set is even number, the peak of described ball is all in same plane, a plurality of circular gaps have been formed between the adjacent ball in twos in the described ball base arc groove, this a plurality of circular gaps measure-alike, needle roller drops in this circular gap when rotating.
5. according to claim 2 or 3 described a kind of hand moment of torsion screw rotating tools, it is characterized in that described actuating sleeve and described needle roller base are fixed mutually and link together, described vexed button is arranged on actuating sleeve and the needle roller base engages in the formed cavity.
6. according to claim 1 or 3 described a kind of hand moment of torsion screw rotating tools, it is characterized in that, described stage clip telescopic adjustment structure comprises adjusts screw and stop nut, described slip spring abutment and described adjustment screw are provided with convex shoulder accordingly, described compression spring sleeve is contained on this convex shoulder, and described adjustment screw is controlled the flexible of stage clip by the rotation move left and right.
7. a kind of hand moment of torsion screw rotating tool according to claim 1 is characterized in that, described bulb in many ways is six side's bulbs.
8. a kind of hand moment of torsion screw rotating tool according to claim 1 is characterized in that, described extension bar is six side's extension bars.
9. a kind of hand moment of torsion screw rotating tool according to claim 3 is characterized in that, described needle roller is the wolfram steel rod.
10. a kind of hand moment of torsion screw rotating tool according to claim 1 is characterized in that described handle is made by hydronalium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220625468 CN203125396U (en) | 2012-11-21 | 2012-11-21 | Hand-operated torque screw screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220625468 CN203125396U (en) | 2012-11-21 | 2012-11-21 | Hand-operated torque screw screwdriver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203125396U true CN203125396U (en) | 2013-08-14 |
Family
ID=48933416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220625468 Expired - Fee Related CN203125396U (en) | 2012-11-21 | 2012-11-21 | Hand-operated torque screw screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203125396U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831773A (en) * | 2012-11-21 | 2014-06-04 | 宁波德诚工具有限公司 | Manual torque screw rotating tool |
| CN110997239A (en) * | 2017-08-09 | 2020-04-10 | 罗伯特·博世有限公司 | Hand-held power tool with depth stop unit |
-
2012
- 2012-11-21 CN CN 201220625468 patent/CN203125396U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831773A (en) * | 2012-11-21 | 2014-06-04 | 宁波德诚工具有限公司 | Manual torque screw rotating tool |
| CN103831773B (en) * | 2012-11-21 | 2016-04-20 | 宁波德诚工具有限公司 | A kind of hand moment of torsion screw rotating tool |
| CN110997239A (en) * | 2017-08-09 | 2020-04-10 | 罗伯特·博世有限公司 | Hand-held power tool with depth stop unit |
| CN110997239B (en) * | 2017-08-09 | 2022-04-01 | 罗伯特·博世有限公司 | Hand-held power tool with depth stop unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20171121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |