CN100569629C - The extension rod of scissor jack handle - Google Patents
The extension rod of scissor jack handle Download PDFInfo
- Publication number
- CN100569629C CN100569629C CNB2007101904427A CN200710190442A CN100569629C CN 100569629 C CN100569629 C CN 100569629C CN B2007101904427 A CNB2007101904427 A CN B2007101904427A CN 200710190442 A CN200710190442 A CN 200710190442A CN 100569629 C CN100569629 C CN 100569629C
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- peg
- snap close
- extension bar
- connection
- lock hole
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Abstract
A kind of extension rod of scissor jack handle belongs to the hardware ﹠ tools technical field.Comprise an extension bar and the extension bar interlocking mechanism that is configured on the extension bar, the two ends structure of extension bar has first, second connection-peg, first, offer first on second connection-peg, second lock hole, extension bar interlocking mechanism is provided on first connection-peg, it comprises snap close, spring, the spring actuator, one end of snap close is placed through in the bonnet lock hole on the corresponding wall body that is opened in first connection-peg, the other end bending of snap close and the end of bending end are corresponding to first lock hole, spring is arranged in the grafting head cavity of first connection-peg, and be set on the snap close, one end of spring is kept out on the wall of the chamber of grafting head cavity, and the other end is bearing on the spring actuator, and the spring actuator connects on snap close.Advantage: rapid operation, action be quick, be convenient to collection; It is effective to automatically reset, and repeated use can ensure reliable reset; Can satisfy the fast quick-acting requirement between extension bar and the bull stick; Extension bar interlocking mechanism can not cause the damage to bull stick.
Description
Technical field
The present invention relates to a kind of extension rod of scissor jack handle, belong to the hardware ﹠ tools technical field.
Background technology
The positive effect of the extension rod that the present jack handle that is seen in by market is used is: the operation intensity that helps to improve the operating speed of jack and can alleviate the operator has solved the puzzlement that is only caused with the bull stick direct control before.Because when adopting bull stick direct control scissors-type jack, because the length of bull stick is extremely limited, the operator must be with the crouching appearance or the posture turn bull stick of arching one's back, thereby cause that action is agile, tired sense is big for the operator, and connect by extension rod and bull stick, can make the satisfied degree that is able to operate jack to the operator of length of bull stick with stance.
Connecting mainly of extension rod and bull stick embodies by the extension bar lockout mechanism, at present, be seen in market is used for the structure of extension bar lockout mechanism that extension rod and bull stick are connected and mainly contains two kinds: the one, and the arm end of the elastomeric a pair of jig arm of extension bar lockout mechanism does not have fixing support locating point; The 2nd, the arm end of the elastomeric a pair of jig arm of extension bar lockout mechanism has fixing support locating point.But all there is shortcoming in both, and former structure is prone to eject when the turn extension bar and comes off and to lose efficacy, though and the latter's elastic body has fixing support locating point, fracture and easily can't resetting because of tired behind repeated use easily.Yet, if in the pivot hole that the arm end of elastomeric a pair of jig arm is hubbed on the extension bar to be offered, so because a pair of jig arm is comparatively tediously long easy deformation, come off, and latching connector does not have auto-reset function.And for example fruit is adopted wing bolt with latching connector, and elastic body adopts a steel wire, so, needs the turn wing bolt during use, and is very inconvenient, influences fast connecting of extension bar and bull stick, tediously long steel wire easy fracture.If also with an elastomeric end rivet clasp on the body of rod of bull stick, elastomeric middle part constitutes an arc and rises, and arc is risen be stuck in the long slot bore that is opened in bull stick, the elastomeric other end constitutes latching connector, during use, rise latching connector is withdrawed from the hole on the extension bar by pushing arc, otherwise, latching connector is entered in the hole on the extension bar, realization connects bull stick and extension bar, so, because the system of need opening on bull stick is used for working the long slot bore that probes into for arc, thereby causes bull stick and have bigger wound, when the turn extension bar, especially when stressed, distortion can appear in long slot bore, undermines bull stick.
U.S. Patent number US5237890 has recommended a kind of automobile-used jack extension arm, pointed out the existing deficiency of jack extension arm of three kinds of previous versions objectively in the background technology of this patent part, specifically can walk to Fig. 1 to Fig. 3 of second hurdle the 46th row and this patent referring to this patent specification the 1st hurdle the 34th.The shortcoming of first kind of structure is: dismounting inconvenience and screw are easily lost; The drawback of second kind of structure is: it is unreliable to connect the location, can occur the extension arm phenomenon that gets loose when dilatory extension arm adjustment jack position; The defective of the third structure is: metal bolt is not so good as second kind of structure on outward appearance and how appropriate, and flexible distortion.
Yet, the applicant thinks, there is the big and installation trouble of difficulty of processing in the disclosed technical scheme of aforementioned US5237890 patent, especially because the unreasonable structure of link, the lasting weak effect of repeated use is because be used to make the spring pin of segmentation bonded assembly link very easily to produce fatigue phenomenon, deform and even rupture, influence connection or dismounting between each segmentation (each is taken over).
Summary of the invention
Task of the present invention is will provide a kind of not only to help to improve to the scissors-type jack operating speed and can alleviate operator's operation intensity and be convenient to the collection keeping, and extension bar interlocking mechanism can not come off from extension bar, can automatically reset and repeated use resets reliably, can ensure the fast quick-acting of extension bar and bull stick, to the extension rod of the damage-free scissor jack handle of bull stick.
Task of the present invention is finished like this, a kind of extension rod of scissor jack handle, it comprises an extension bar and the extension bar interlocking mechanism that is configured on the extension bar, the two ends of extension bar constitute first respectively, second connection-peg, first, offer first respectively on second connection-peg, second lock hole, described extension bar interlocking mechanism is provided on described first connection-peg, it comprises snap close, spring, the spring actuator, one end of snap close is placed through in the bonnet lock hole on the corresponding wall body that is opened in first connection-peg, the other end bending of snap close and the end of bending end are corresponding to described first lock hole, spring is arranged in the grafting head cavity of first connection-peg, and be set on the snap close, one end of spring is kept out on the wall of the chamber of grafting head cavity, and the other end is bearing on the spring actuator, and the spring actuator connects on snap close.
In a specific embodiment of the present invention, described spring actuator is a pressure cap, and an end of pressure cap is stretched in the grafting head cavity and is connected with snap close, and it is outer and expand and be provided with one and be used for establishing portion for the expansion of operator presses that the other end is stuck in the grafting head cavity.
In another specific embodiment of the present invention, described spring actuator is one to be arranged in the backing pin of grafting head cavity, is installed on the snap close.
Go back in the specific embodiment of the present invention, described spring actuator is a jump ring, is fastened on the snap close in the grafting head cavity.
In another specific embodiment of the present invention, the appearance integral shape U-shaped in general of described snap close.
In another specific embodiment of the present invention, an end of described pressure cap be stretched in the grafting head cavity be threaded with being connected to of snap close or be welded to connect in any one be connected.
More of the present invention and in specific embodiment, described first, second connection-peg be shaped as rectangle.
In of the present invention and then specific embodiment, be concaved with an extension bar guide channel on the tail end outer wall of described second connection-peg.
Of the present invention again more and in specific embodiment, described extension bar guide channel is arranged with on the same wall body of second lock hole that offers on second connection-peg.
In again of the present invention and then specific embodiment, the shape U-shaped in general of described extension bar guide channel, and corresponding with described second lock hole.
The technical scheme that the present invention recommended advantage compared with the prior art: can be matched during use with bull stick, thus make bull stick obtain prolonging.When stand-by state, can separate, therefore can satisfy operator's rapid operation, improve the agility of action, can be convenient to collection again with bull stick; The snap close of extension bar interlocking mechanism can not come off from extension bar, is provided with spring on snap close, not only have the good effect that automatically resets, and repeated use can ensure reliable reset all the time; Can satisfy the fast quick-acting requirement between extension bar and the bull stick; Extension bar interlocking mechanism can not cause the damage to bull stick.
Description of drawings
Fig. 1 is a first embodiment of the present invention constructional drawing.
Fig. 2 is a second embodiment of the present invention constructional drawing.
Fig. 3 is an application examples scheme drawing of the present invention.
The specific embodiment
By following description to embodiment; to help public understanding technical spirit of the present invention and beneficial effect more; but the specific embodiment that the applicant can't be provided is considered as the restriction to the present invention program, and any definition to technical characterictic changes and/or integral structure is made form but not the conversion of essence all should be considered as the protection domain that technical scheme of the present invention limits.
Please consult Fig. 1, give on the right of this figure and to be used for the bull stick 3 matched with the extension bar 1 on the left side, be used for the matched end of extension bar 1 at bull stick 3 and constitute the bull stick joint 31 that a shape of cross section is a rectangle equally, and on the same wall body of bull stick joint 31, be provided with bull stick lock hole 311 and bull stick guide channel 312.
The preference as the scissor jack handle extension rod that the present invention recommended comprises two parts, one is extension bar 1, two is extension bar interlocking mechanism 2, being processed into shape of cross section respectively at the two ends of extension bar 1 is first, second connection- peg 11,12 of rectangle (present embodiment is selected square), offer first, second lock hole 111,121 on first, second connection- peg 11,12 respectively, the hole shape of first, second lock hole 111,121 is preferably circular port.(graphic right-hand member) is concaved with the extension bar guide channel 122 that shape trends towards U-shaped basically on the tail end outer wall of second connection-peg 12, this extension bar guide channel 122 should be arranged on the wall body of the same side of second connection-peg 12 that has second lock hole 121, and remains on the same straight line with second lock hole 121.The self-evident effect of extension bar guide channel 122 is that the connection for adjacent extension bar 1 provides guiding, promptly guides extension bar interlocking mechanism 2 and 121 lockings of second lock hole on another root extension bar 1.
The position of the extension bar interlocking mechanism 2 that present embodiment is recommended is in first connection-peg, 11 places, it comprises snap close 21 and spring 22 and spring actuator 23, with shape of cross section is that circular steel are made snap close 21, and an end of snap close 21 is penetrated in the bonnet lock hole 112 on the corresponding wall body that is preset in first connection-peg 11, and the ends that the other end of snap close 21 promptly is positioned at outside the plug cavity 113 are bent into the U type, and the end of bending end is corresponding in first lock hole 111.Spring 22 is placed in grafting head cavity 113 on the snap close 21, and an end is kept out on the internal chamber wall of grafting head cavity 113, and the other end is kept out on spring actuator 23.The spring actuator of recommending in the present embodiment 23 is the pressure cap structure, one end extend in the plug cavity 113 and is connected with snap close 21, preferred connectivity scenario is that the endoporus hole wall to spring actuator 23 processes negative thread, and to processing outside thread on the snap close 21, internal and external screw thread matches and makes spring actuator 23 and snap close 21 realize being threaded, and spring actuator 23 also is that the other end of pressure cap is stuck in grafting head cavity 113 and expands and is provided with being used for as the likeness in form button and establishes portion 231 for the operator by the expansion of giving as security.When the user establishes portion 231 by companding, spring 22 compressions, thus the snap close head 211 that before extend in first lock hole 111, the body of rod lock hole 311 is withdrawed from from body of rod lock hole 311, first lock hole 111, make extension bar 1 and bull stick 3 releases.Otherwise then can automatically reset.Here automatically reseting of being said is meant: leave when operator's finger and expand when establishing portion 231, under the restoring force effect of spring 22, make the snap close head 211 of snap close 21 automatically enter into first lock hole 111, no matter repeated use and can not cause that snap close 21 comes off and reset malfunctioning from extension bar 1.Though above adopt the example that is threaded for having reached between spring actuator 23 and the snap close 21, do not repel spring actuator 23 and implement to be welded to connect with snap close 21.
Embodiment 2:
See also Fig. 2, use spring actuator 23 instead backing pin, fixing with snap close 21 in grafting head cavity 113, when operator presses snap close 21, can make spring 22 compressions equally, guarantee that snap close head 211 withdraws from from bull stick lock hole 311, first lock hole 111, otherwise then automatically reset.If use backing pin instead jump ring, should be considered as equivalence, all the other are with the description to embodiment 1.
Application examples:
See also Fig. 3, when using to scissors-type jack 4 operations, hook in the dog hole 4111 on the screw head 411 of screw rod 4 of scissors-type jack 4 earlier with the bull stick hook 32 on the bull stick 3, the in addition adapter 31 of end of bull stick 3 is inserted in the grafting head cavity 113 of first connection-peg 11 of the extension bar of recommending by the present invention 1 of being furnished with any one related among the embodiment 1,2 extension bar interlocking mechanism 2, because bull stick 3 is provided with bull stick guide channel 312, therefore have good directional tagging, promptly be convenient to snap close head 211 and enter automatically in first bonnet lock hole 111, the bull stick lock hole 311.Will be particularly, when the bull stick lock hole 311 on the bull stick 3 and first lock hole 111 are in when overlapping the position, under the release of spring 22, snap close head 211 just enters into the hole automatically, finishes connecting of bull stick 3 and extension bar 1.Be nested with on second connection-peg 12 of extension bar 1 with spanner 5, cw or conter clockwise turn spanner 5 drive extension bar 1 rotation again, and bull stick 3 is with revolving, until making scissors-type jack 4 liftings or resetting.Because extension bar 1 and bull stick 3 have been realized connection by extension bar interlocking mechanism 2, make the length of bull stick 3 obtain reasonable prolongation, therefore in the entire job process, the user can stand and handle scissors-type jack 4, helps to improve operating efficiency and embodies laborsaving.After finishing using,, make snap close head 211 withdraw from bull stick lock hole 311, first lock hole 111, dial and remove extension bar 1, collect standby as long as push snap close 21.
Claims (10)
1, a kind of extension rod of scissor jack handle, it is characterized in that it comprises an extension bar (1) and is configured in extension bar interlocking mechanism (2) on the extension bar (1), the two ends of extension bar (1) constitute first connection-peg (11) and second connection-peg (12) respectively, offer first lock hole (111) on first connection-peg (11), offer second lock hole (121) on second connection-peg (12), described extension bar interlocking mechanism (2) is provided on described first connection-peg (11), it comprises snap close (21), spring (22), spring actuator (23), one end of snap close (21) is placed through in the bonnet lock hole (112) on the corresponding wall body that is opened in first connection-peg (11), the other end bending of snap close (21) and the end of bending end are corresponding to described first lock hole (111), spring (22) is arranged in the grafting head cavity (113) of first connection-peg (11), and be set on the snap close (21), one end of spring (22) is kept out on the chamber wall of grafting head cavity (113), the other end is bearing on the spring actuator (23), and spring actuator (23) connects on snap close (21).
2, the extension rod of scissor jack handle according to claim 1, it is characterized in that described spring actuator (23) is a pressure cap, one end of pressure cap is stretched in the grafting head cavity (113) and is connected with snap close (21), and it is outer and expand and be provided with one and be used for establishing portion (231) for the expansion of operator presses that the other end is stuck in grafting head cavity (113).
3, the extension rod of scissor jack handle according to claim 1 is characterized in that described spring actuator (23) is one to be arranged in the backing pin of grafting head cavity (113), is installed on the snap close (21).
4, the extension rod of scissor jack handle according to claim 1 is characterized in that described spring actuator (23) is a jump ring, is fastened on the snap close (21) in grafting head cavity (113).
5,, it is characterized in that the appearance integral shape U-shaped in general of described snap close (21) according to the extension rod of the described scissor jack handle of arbitrary claim among the claim 1-4.
6, the extension rod of scissor jack handle according to claim 2, an end that it is characterized in that described pressure cap be stretched in the grafting head cavity (113) be threaded with being connected to of snap close (21) or be welded to connect in any one be connected.
7, the extension rod of scissor jack handle according to claim 1 is characterized in that the rectangle that is shaped as of described first connection-peg (11) and second connection-peg (12).
8,, it is characterized in that being concaved with an extension bar guide channel (122) on the tail end outer wall of described second connection-peg (12) according to the extension rod of claim 1 or 7 described scissor jack handles.
9, the extension rod of scissor jack handle according to claim 8 is characterized in that described extension bar guide channel (122) is arranged with on the same wall body of second lock hole that offers (121) on second connection-peg (12).
10, the extension rod of scissor jack handle according to claim 9 is characterized in that the shape U-shaped in general of described extension bar guide channel (122), and corresponding with described second lock hole (121).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101904427A CN100569629C (en) | 2007-11-24 | 2007-11-24 | The extension rod of scissor jack handle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101904427A CN100569629C (en) | 2007-11-24 | 2007-11-24 | The extension rod of scissor jack handle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101172568A CN101172568A (en) | 2008-05-07 |
| CN100569629C true CN100569629C (en) | 2009-12-16 |
Family
ID=39421355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101904427A Expired - Fee Related CN100569629C (en) | 2007-11-24 | 2007-11-24 | The extension rod of scissor jack handle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100569629C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110006273A1 (en) * | 2009-07-08 | 2011-01-13 | Shinn Fu Corporation | Scissor Jack |
| CN102717374A (en) * | 2012-06-01 | 2012-10-10 | 常熟通润汽车零部件股份有限公司 | Shank structure for horizontal hydraulic jack |
| CN104140064A (en) * | 2014-07-24 | 2014-11-12 | 南通市通润汽车零部件有限公司 | Multifunctional press handle assembly |
| CN110342433A (en) * | 2019-07-30 | 2019-10-18 | 安徽省金寨县金钢叉车部件制造有限公司 | A kind of fork truck manipulation rod structure |
-
2007
- 2007-11-24 CN CNB2007101904427A patent/CN100569629C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101172568A (en) | 2008-05-07 |
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Granted publication date: 20091216 Termination date: 20141124 |
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| EXPY | Termination of patent right or utility model |