CN201580946U

CN201580946U - Jack bracket

Info

Publication number: CN201580946U
Application number: CN2009202692656U
Authority: CN
Inventors: 贾里德·汉隆
Original assignee: POOLE HOLDINGS CO Ltd
Current assignee: POOLE HOLDINGS CO Ltd
Priority date: 2009-11-11
Filing date: 2009-11-11
Publication date: 2010-09-15
Anticipated expiration: 2019-11-11

Abstract

The utility model provides a jack bracket. A gear rack which can be lifted is assembled in a neck-shaped rack above a tapered base. The jack bracket is matched with a pawl to control the height of the gear rack so as to provide the needed supporting effect. A spring which is connected with the pawl is arranged in the base and pulls the pawl to the position clamping with the gear rack. When a user presses down the lower end of the pawl, the pawl can deviate and separate from the position clamping with the gear rack so as to adjust the height of the gear rack; when the pawl is loosened, the spring can pull back the pawl to the position clamping with the gear rack. A penetrating hole is arranged on the pawl; when the pawl and the gear rack are located at the clamping position, a retraining pin can be inserted into the penetrating hole to exert the locking function, so as to lead the pawl not to deviate and lead the gear rack not to move due to being clamped by the pawl. Therefore, the jack bracket is safer.

Description

Jack stand

Technical field

The utility model relates to a kind of jack stand, and it relates to the higher jack stand of a kind of safety.

Background technology

Jack stand is a kind of bracing or strutting arrangement that is used with jack, it mainly is to be assembled with a height adjustable tooth bar in a base, cooperate ratchet to engage this tooth bar simultaneously, so can be when tooth bar be adjusted to suitable height, by ratchet tooth bar is fastened on the fixed position, so that required supporting role to be provided.Generally repair or similar operations in the user can use jack with the object jacking that makes progress, but because jack is to provide the effect of shoring with oil pressure, it also is not suitable for being used for long support use, if provide a supporting role for a long time with jack, then jack might be subjected to drops gradually because of oil circuit sealing imperfection, so generally all need to use the jack stand of physical construction to support by the object of jack jacking to guarantee safety.

Existing jack stand is the ratchet deflection that utilizes a rocking bar to control to be hubbed in the base, with the control ratchet by the position disengagement that engage with tooth bar, so that carry out the adjustment of tooth bar height.In existing design is when the user up pulls rocking bar, drive ratchet deflection, deviate from the teeth groove of top part by tooth bar of ratchet, and can carry out the adjustment of tooth bar height, when the user discharges joystick, ratchet is promptly acted on downwards by spring pulling and joystick gravity and returns back to the position that engages with tooth bar, thereby plays the effect of stationary rack height, the practicality effect when it can reach design in use really.Kicked joystick accidentally and upward deflect by joystick but the user is once taken place in practical operation, and caused ratchet to be thrown off in the teeth groove of tooth bar, tooth bar glides, and causes the accident easily.

Summary of the invention

Main purpose of the present invention provides the higher jack stand of a kind of safety, provides the locking of ratchet effect by next the cooperation with backing pin of perforation is set on ratchet, improves the safety performance in the use.

For achieving the above object, a kind of jack stand provided by the invention, it has in the base of the neck shape frame that is one one and is assembled with a tooth bar, side at this base neck shape frame is pivoted with a ratchet with pivot, the top part of this ratchet can be fastened in the teeth groove of tooth bar, it is characterized in that: be formed with a perforation on this ratchet, a backing pin can be inserted in this perforation.

Preferably, described perforation is formed on the hypomere outer fix that ratchet is lower than pivot.

Preferably, the hypomere outer fix that is lower than pivot at this ratchet is formed with a press section of protruding, and this perforation is formed on this press section.

Preferably, described backing pin passes the width that its length behind the ratchet surpasses neck shape frame.

By above-described technical scheme, the higher jack stand of a kind of safety of the present invention, because ratchet is provided with perforation and can inserts a backing pin, the tooth bar of adjusting jack stand as the user is to being suitable for height, when allowing ratchet snap into the location simultaneously, backing pin is inserted in the perforation, the two ends of backing pin are blocked by the outside at neck shape frame two ends, provide ratchet firm locking effect, guarantee that ratchet maintains and the tooth bar clamped position, can from teeth groove, not break away from, thereby avoid misoperation and the danger that causes tooth bar to glide.

Description of drawings

Fig. 1 is the plan sketch of the utility model one preferred embodiment;

Fig. 2 is the birds-eye view of preferred embodiment shown in the utility model Fig. 1;

Fig. 3 is the right side plan sketch of preferred embodiment shown in the utility model Fig. 1;

Fig. 4 is the profile of Fig. 3 along the A-A direction;

Fig. 5 is the profile of Fig. 1 along the B-B direction.

The specific embodiment

With reference to shown in Figure 1, it is the jack stand plan sketch of the utility model one preferred embodiment, it has a tapered base 1, be one to be the neck shape frame 11 of one above this base 1, in this neck shape frame 11, be assembled with the tooth bar 5 that to regulate lifting, be one to be the bearing 51 of Y font on these tooth bar 5 tops, be formed with the teeth groove 52 of unidirectional inclination (ratchet-like) simultaneously in a side of this tooth bar 5; The section-drawing that cooperates Fig. 4, side at this base 1 neck shape frame 11 is pivoted with a ratchet 2, this ratchet 2 is to be hubbed on the neck shape frame 11 with a pivot 3, and this ratchet 2 is to cooperate an elastic cylindrical pin 4 to be fixedly mounted on the pivot 3, the top part 21 of this ratchet 2 can be fastened in the teeth groove 52 of tooth bar 5, the hypomere outer fix that is lower than pivot 3 at this ratchet 2 is formed with a press section 22 of protruding, and on this press section 22, be formed with one the perforation 23, and can allow a backing pin 7 be inserted in this perforation 23, be formed with a lug 24 in these ratchet 2 lower ends in addition, be connected with a spring 9 in these lug 24 1 sides, the end in addition of this spring 9 is connected base 1 inboard (not shown), neck shape frame 11 inboards above this ratchet 2 are set with a upper stop piece 6, be fixed with a square block 8 (cooperate and consult Fig. 5) at these ratchet 2 hypomeres with neck shape frame 11 inboards between this tooth bar 5, in Fig. 1, can see on pivot 3 ends in neck shape frame 11 outsides in addition and be arranged with a ring stiffener 10.

Again by the right side plan sketch of birds-eye view and Fig. 3 of Fig. 2, wherein can see the be pivoted pivot 3 of ratchet 2 of the utility model and run through neck shape frame 11, simultaneously on pivot 3 both ends in neck shape frame 11 outsides, be arranged with a ring stiffener 10 respectively, can see in addition this backing pin 7 in the drawings and pass ratchet 2 its length of back and surpassed the width of neck shape frame 11, and can be fastened on neck shape frame 11 outsides.

Cooperate again and consult Fig. 3 and shown in Figure 4, ratchet 2 of the present utility model is to be hubbed in the neck shape frame 11 by pivot 3, under the state shown in the figure, this backing pin 7 is arranged in the perforation 23 on these ratchet 2 press sections 22, and the two ends of this backing pin 7 are blocked by two outsides of neck shape frame 11, make the press section 22 of ratchet 2 can't be pressed into neck shape frame 11 inboards, that is this ratchet 2 can't carry out deflection, certainly the top part 21 of this ratchet 2 promptly can't break away from the teeth groove 52 of tooth bar 5, and tooth bar 5 promptly is fixed on this position and can't does adjustment highly;

When the user desires to carry out the height adjustment of tooth bar 5, must be earlier with backing pin 7 by extracting out in the perforation 23 on these ratchet 2 press sections 22, make ratchet 2 keep state in teeth groove 52 that shown in the figure top part 21 snap in tooth bar 5 because spring 9 application forces that are stretched of ratchet 2 pin down this moment; If the user desires to heighten tooth bar 5, can directly tooth bar 5 be drawn high upward by bearing 51 place's application of forces of tooth bar 5, the teeth groove 52 that is ratchet-like when drawing high can push away the top part 21 of ratchet 2 teeth groove 52 (causing ratchet 2 to produce deflection according to pivot 3), and can draw high the height of tooth bar 5 smoothly, when being adjusted to suitable height, stop the application of force, tooth bar 5 promptly can fall because of self gravitation, ratchet 2 meetings this moment reverse deflection because of the effect of spring 9 makes its top part 21 snap in the nearest teeth groove 52 of top; If the user desires to turn down tooth bar 5, then can be after backing pin 7 be drawn out of, neck shape frame 11 inboards are pressed in the press section 22 of ratchet 2, and make ratchet 2 produce deflection according to pivot 3, make top part 21 by deviating from the teeth groove 52, allow tooth bar 5 slowly move down carrying out this when operation user's bearing 51 of can the another hand gripping tooth bar 5, the press section 22 of ratchet 2 can be discharged when waiting to move to desired height, ratchet 2 promptly can be because of the oppositely deflection of effect of spring 9, make its top part 21 snap in the nearest teeth groove 52 of top, or the user is being pressed to rear flank in the neck shape frame 11 with the press section 22 of ratchet 2, appoint this tooth bar 5 to fall according to own wt, when this tooth bar 5 freely fell, the lower edge of its bearing 51 can touch upper stop piece 6, and rested on this position, this position is the extreme lower position that tooth bar 5 moves down, this moment, the press section 22 with ratchet 2 discharged, and ratchet 2 promptly can make its top part 21 snap in the teeth groove 52 of the top because of the oppositely deflection of effect of spring 9; After the height adjustment of tooth bar 5 was finished, the user can turn back to backing pin 7 in the perforation 23 on these ratchet 2 press sections 22, and ratchet 2 is locked.

When the user is being pressed to the press section 22 of ratchet 2 on neck shape frame 11 when inboard, because the setting of square block 8, can prevent that ratchet 2 from running into tooth bar 5 when deflection.

Because the utility model structure configuration, make tooth bar 5 after being adjusted to desired height, can see through backing pin 7 ratchet 2 that locks, and in can guaranteeing to use not can because of kick or other misoperation and allow tooth bar 5 unexpected downslides, make jack stand have more safety.

Claims

1. jack stand, it has in the base of the neck shape frame that is one one and is assembled with a tooth bar, side at this base neck shape frame is pivoted with a ratchet with pivot, the top part of this ratchet can be fastened in the teeth groove of tooth bar, it is characterized in that: be formed with a perforation on this ratchet, a backing pin can be inserted in this perforation.

2. jack stand as claimed in claim 1 is characterized in that: this perforation is formed on the hypomere outer fix that ratchet is lower than pivot.

3. jack stand as claimed in claim 1 or 2 is characterized in that: the hypomere outer fix that is lower than pivot at this ratchet is formed with a press section of protruding, and this perforation is formed on this press section.

4. jack stand as claimed in claim 1 is characterized in that: this backing pin passes the width that its length behind the ratchet surpasses neck shape frame.