CN201144140Y

CN201144140Y - Extension rod of scissor jack handle

Info

Publication number: CN201144140Y
Application number: CNU2007200416046U
Authority: CN
Inventors: 吴伟刚
Original assignee: CHANGSHU LONGXIN ELECTROMECHANICAL PARTS Co Ltd
Current assignee: CHANGSHU LONGXIN ELECTROMECHANICAL PARTS Co Ltd
Priority date: 2007-11-24
Filing date: 2007-11-24
Publication date: 2008-11-05
Anticipated expiration: 2017-11-24

Abstract

An extension rod of a scissors jack handle belongs to the technical field of hardware tools; the utility model includes a connection rod and a connection rod locking mechanism arranged on the connection rod; the two ends of the connection rod are provided with a first connecting peg and a second connecting peg; a first locking hole and a second locking hole are arranged on the first connecting peg and the second connecting peg; the connection rod locking mechanism is arranged on the first connecting peg and includes a locking buckle, a spring and a spring actuation piece; one end of the locking buckle is penetrated and arranged in a locking buckle hole arranged on the corresponding wall body of the first connecting peg; the other end of the locking buckle is bent and the end part of the bending end is corresponding to the first locking hole; the spring is arranged in the connecting peg cavity of the first connecting peg and is sheathed on the locking buckle; one end of the spring is blocked on the cavity wall of the connecting peg cavity; the other end is supported on the spring actuation piece; the spring actuation piece is arranged and connected on the locking buckle; the extension rod of a scissors jack handle has the advantages of: saving labor when being operated, moving fast and being convenient to be stored; good automatic offset effect, repeated use and being capable of ensuring reliable offset; being capable of meeting the fast arrangement and connection requirements between the connection rod and a rotating rod; the connection rod locking mechanism can not cause damage to the rotating rod.

Description

The extension rod of scissor jack handle

Technical field

The utility model relates to a kind of extension rod of scissor jack handle, belongs to the hardware ﹠ tools technical field.

Background technology

In the technical scheme of the present still undocumented Chinese patent application number extension rod that 200720034529.0 jack handles of being recommended are used, recommend the extension rod of six kinds of forms with different embodiment, the positive effect of this technical scheme 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 in the prior art.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, the extension bar lockout mechanism of six kinds of versions has been introduced in above-mentioned patent application, known to the applicant, existing corresponding analog equipment is to user's promotion, yet the user is also unsatisfactory to the responsiveness of product, focus is that the structure of extension bar lockout mechanism loses reasonableness, in use can expose variety of issue unavoidably.For example the extension bar lockout mechanism of the embodiment one, two of this patent application does not have fixing support locating point because of first, second arm end of elastomeric a pair of first, second jig arm, is prone to ejection and comes off and lost efficacy when the turn extension bar; And for example the structure of embodiment three though elastic body has fixing support locating point, ruptures easily and easily can't reset because of tired behind repeated use; Also as the structure of embodiment four, in the pivot hole that the arm end of elastomeric first, second jig arm is hubbed on the extension bar to be offered, because first, second jig arm is comparatively tediously long, cause whole extension bar lockout mechanism and show as mantis shape on the whole, thereby easy deformation, come off, and latching connector does not have auto-reset function; The structure of embodiment five for another example, latching connector adopts wing bolt, and elastic body adopts a steel wire, 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; More as the structure of embodiment six, 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, is used for working the long slot bore that probes into for arc because this scheme need be opened system on bull stick, 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.

Summary of the invention

Task of the present utility model 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 utility model 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 utility model, 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 utility model, 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 utility model, 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 utility model, the appearance integral shape U-shaped in general of described snap close.

In another specific embodiment of the present utility model, 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 utility model and in specific embodiment, described first, second connection-peg be shaped as rectangle.

In of the present utility model 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 utility model 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 utility model 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 utility model is 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 the first example structure figure of the present utility model.

Fig. 2 is the second example structure figure of the present utility model.

Fig. 3 is an application examples scheme drawing of the present utility model.

The specific embodiment

By following description to embodiment; to help public understanding technical spirit of the present utility model and beneficial effect more; but the specific embodiment that the applicant can't be provided is considered as the restriction to the utility model scheme, 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 the technical solution of the utility model limits.

Embodiment 1

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 utility model is 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 utility model 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

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 respectively, second connection-peg (11,12), first, second connection-peg (11,12) offer first respectively on, second lock hole (111,121), 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, second connection-peg (11,12).

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).