CN216105787U - Scissor jack - Google Patents

Abstract

The utility model discloses a scissor jack, belonging to the technical field of mechanical jacks and comprising a base; a support assembly mounted on the base; the movable top comprises a top plate and two side plates, and the two side plates are oppositely arranged below the top plate; the both sides board correspondence of activity top is provided with a bar hole and a breach, the breach is 7 style of calligraphy structures, the supporting component top is provided with two round pin axles, runs through respectively bar hole and breach, the activity top has the horizontal degree of freedom of left right direction, first round pin axle can be deviate from in the breach. The jack can be increased in maximum height without adding auxiliary parts, the service life of the jack is guaranteed, meanwhile, the minimum height of the jack is not increased, the storage requirement of the jack is met, and the jack is simple and easy to operate and suitable for being used by more vehicle types.

Description

Scissor jack

Technical Field

The utility model relates to the field of mechanical jacks, in particular to a scissor jack.

Background

At present, small and medium-sized automobiles are equipped with scissor jacks along with the automobiles, and the scissor jacks are used for replacing tires or maintaining the automobiles in emergency. The jacks equipped on the vehicle are mostly in the same type and in a single structure. The height range of the jacks is fixed, and the maximum height of the jacks cannot meet the jacking requirements of different vehicle types and the working environment with further requirements on the jacking height.

The Chinese patent with the application number of CN200920124148.0 discloses a scissor jack heightening adjusting device, which comprises a jack body and a top support on the jack body, wherein a threaded sleeve is arranged on the top support, an adjusting head is arranged in the threaded sleeve, and the adjusting head is in threaded fit connection with the threaded sleeve; the utility model has simple structure and convenient carrying, improves the application range of the scissor jack and can be used as a spare part of the scissor jack.

Chinese patent with application number CN201910688094.9 discloses a heightening top head component of a scissor jack, wherein a pressure-bearing support is of a U-shaped frame type, and an inner support and the U-shaped frame are fixedly connected by a first pin shaft, a third coaxial hole, a second pin shaft and a fourth coaxial hole in a frame inner cavity of the U-shaped frame respectively; the special-shaped nut is embedded into the U-shaped frame, and the interference fit of the non-circular shaft hole is implemented; the lower end face of an inner support bracket arranged on a heightening top head component formed by combining the pressure-bearing bracket with a rotating pivot shaft with a handle is jointed with the load end face on the shear top body, and the rotating pivot shaft with the handle is in clearance fit and threaded connection with a first coaxial hole of the pressure-bearing bracket and a shaft hole of a second coaxial hole on the shear top body; the special heightening jacking head part accessory is combined on the body of the scissor jack in an adaptive mode, so that the cost is reduced, the cost performance of the jack is greatly improved, and the application range is expanded on the basis of a basic scissor jack mode.

Although the method of the patent realizes the increase of the maximum height of the jack and increases the application range of the jack, the increase of the maximum height of the jack is realized by increasing the auxiliary parts, and the problem that the auxiliary parts are lost to cause the loss of the heightening function exists in the detached auxiliary parts in the actual use process; meanwhile, the jack without disassembling the auxiliary part exceeds the jack accommodating space reserved by the automobile at the lowest height, so that the jack cannot be accommodated, and the jack cannot be compatibly applied to different automobile types.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that in the prior art, a jack with a heightening auxiliary part is added, so that the heightening function is lost due to the fact that the auxiliary part is easy to lose; and the jack surpasses the jack accommodating space reserved by the automobile at the lowest height and cannot be accommodated. The utility model provides a scissor jack need not increase the accessory, when can accomplish adjustment jack height range, guarantees that the jack minimum height does not increase, satisfies the requirement of accomodating of jack, and simple easy operation adapts to more motorcycle types and uses.

In order to achieve the purpose, the utility model provides the following technical scheme:

a scissor jack comprising

A base;

a support assembly mounted on the base;

the movable top comprises a top plate and two side plates, and the two side plates are oppositely arranged below the top plate; the both sides board correspondence of activity top is provided with a bar hole and a breach, the breach is 7 style of calligraphy structures, the supporting component top is provided with first round pin axle and second round pin axle, runs through respectively breach and bar hole, the activity top has the horizontal degree of freedom of left right direction, first round pin axle can be followed and is deviate from in the breach.

After the work is used, remove the movable top about, will first round pin axle is deviate from the opening of breach, can be rotatory around the second round pin axle that runs through the bar hole with the activity top promptly, and the activity top after the rotation can be lain on one's side on the upper support arm, because the activity top is rotatory around the bar hole, and the activity top of lying on one's side can be further downwards along the bar hole, has guaranteed minimum height. By adopting the structure, the height of the movable plug is increased during working, and the movable plug is suitable for more working scenes; after the working is finished, the lowest height of the jack is not increased, and the jack accommodating space is not increased, so that the lifting jack is suitable for more vehicle types; meanwhile, the movable ejector head is rotatably stored without being detached and separated, so that the effective movable ejector head is guaranteed not to be lost, and the service life is guaranteed.

Furthermore, the width of the notch is larger than the shaft diameter of the first pin shaft, the end part of the notch is of an arc-shaped structure and is matched with the shape of the first pin shaft, two side edges of the middle part of the notch are parallel, and the two side edges are not overlapped with a horizontal line when the movable top head is in a vertical state.

In the process of working and using, under the vertical state of the movable top head, the end part shape of the notch is in accordance with the shape of the first pin shaft, so that the first pin shaft is effectively ensured to be stable and not slide in the notch in the bearing process; meanwhile, an included angle is formed between the lower side edge of the middle part of the notch and a horizontal line, so that the first pin shaft is effectively prevented from sliding out of the notch due to lateral force in the using process, and stability is guaranteed.

Further, under the vertical state of the movable top, the height of the side plate of the movable top is larger than the width.

The width of the movable top side plate is smaller than the height. After the use, remove movable top about, deviate from the first round pin axle of running through of breach along the opening, set up the rotatory horizontal placement of activity top side of second round pin axle in bar hole around the wearing, the curb plate width of activity top is less than the height, has guaranteed the minimum height of jack.

Furthermore, the movable top plate and the two side plates are of an integral structure.

The top plate and the two side plates of the movable top head are of an integrally formed structure, so that the production and assembly cost is effectively reduced.

Furthermore, the shape of the movable top head top plate is adapted to the shape of the contact surface of the object to be supported.

The shape of the top plate of the movable jacking head is adapted to the shape of the contact surface of the supported object, so that the jack is stable and does not slide with the supported object in the using process, and no danger is generated.

Further the supporting component comprises two upper supporting arms, two lower supporting arms and two fixing plates, wherein the two fixing plates are arranged on the outer sides of the top ends of the two upper supporting arms relatively, the top ends of the two upper supporting arms are hinged to the fixing plates respectively, the other ends of the two upper supporting arms are hinged to one ends of the two lower supporting arms respectively, and the other ends of the two lower supporting arms are hinged to the base respectively.

Furthermore, the two upper supporting arms and the two lower supporting arms are equal in length and enclose an equilateral quadrilateral, and the movable top and the base are located on the same plumb line.

The upper supporting arm and the lower supporting arm which are equal in length jointly form an equilateral quadrilateral, pressure of a supported object acting on the movable jacking head is evenly transmitted to the base through the structure of the equilateral quadrilateral, the working stability of the jack is guaranteed, and the reduction of the service life of the jack due to uneven stress is prevented. Meanwhile, the movable jacking head and the base are positioned on the same plumb line, so that the vertical and upward working state of the jack is effectively ensured.

Furthermore, the scissor jack further comprises a screw rod, two hinged positions of the upper supporting arm and the lower supporting arm are respectively provided with a nut and a bearing, and the screw rod penetrates through the bearing, penetrates through the nut and is in threaded connection with the nut.

Furthermore, the end part of the screw rod, which is positioned at the outer side of the bearing, is provided with a screwing ring.

The spanner is used for rotating the screwing ring, the relative position of the screw rod and the nut is moved to change the relative position of the upper supporting arm and the lower supporting arm, the movable ejection head is moved along the vertical direction under the driving of the upper supporting arm and the lower supporting arm, and the bearing is moved along the vertical direction by a bearing object, so that time and labor are saved.

Advantageous effects

After the work is used, remove the movable top about, will the first round pin axle that runs through the breach deviates from the opening of breach, can be rotatory around the second round pin axle that runs through the bar hole with the movable top promptly, and the activity top after the rotation can be lain on one's side on the upper support arm, because the activity top is rotatory around the bar hole, and the activity top of lying on one's side can be further downwards along the bar hole, has guaranteed minimum height. By adopting the structure, the height of the movable plug is increased during working, and the movable plug is suitable for more working scenes; after the working is finished, the lowest height of the jack is not increased, and the jack accommodating space is not increased, so that the lifting jack is suitable for more vehicle types; meanwhile, the movable ejector head is rotatably stored without being detached and separated, so that the effective movable ejector head is guaranteed not to be lost, and the service life is guaranteed. In the process of working and using, under the vertical state of the movable top head, the end part shape of the notch is in accordance with the shape of the first pin shaft, so that the first pin shaft is effectively ensured to be stable and not slide in the notch in the bearing process; meanwhile, two side edges of the middle part of the notch are parallel and do not coincide with the horizontal line, and the lower side edge of the middle part of the notch forms an included angle with the horizontal line, so that the first pin shaft can not slide out in the notch due to lateral force in the using process and stability is guaranteed. The width of the movable top side plate is smaller than the height. After the use, remove the movable top about, deviate from the first round pin axle of running through of breach along the opening, set up the rotatory activity top side-horizontal type of placing of round pin axle in bar hole around wearing, the curb plate width of activity top is less than highly, has guaranteed the minimum height of jack. The top plate and the two side plates of the movable top head are of an integrally formed structure, so that the production and assembly cost is effectively reduced. The shape of the top plate of the movable jacking head is adapted to the shape of the contact surface of the supported object, so that the jack is stable and does not slide with the supported object in the using process, and no danger is generated. The upper supporting arm and the lower supporting arm which are equal in length jointly form an equilateral quadrilateral, pressure of a supported object acting on the movable jacking head is evenly transmitted to the base through the structure of the equilateral quadrilateral, the working stability of the jack is guaranteed, and the reduction of the service life of the jack due to uneven stress is prevented. Meanwhile, the movable jacking head and the base are positioned on the same plumb line, so that the vertical and upward working state of the jack is effectively ensured. The spanner is used for rotating the screwing ring, the movable ejection head moves along the vertical direction under the driving of the upper supporting arm and the lower supporting arm, and the bearing supported object moves along the vertical direction, so that time and labor are saved.

It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of the present disclosure unless such concepts are mutually inconsistent.

The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.

Drawings

The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of the highest elevation configuration of a scissor jack of the present application;

FIG. 2 is a schematic view of the lowest elevation configuration of the scissor jack of the present application;

FIG. 3 is a schematic view of the construction of the removable plug side panel of the present application;

description of reference numerals:

1. the device comprises a base, 2, an upper supporting arm, 3, a lower supporting arm, 4, a screw rod, 5, a screwing ring, 6, a first pin shaft, 7, a second pin shaft, 8, a movable top, 9, a notch, 10, a strip-shaped hole, 11 and a fixing plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the utility model without any inventive step, are within the scope of protection of the utility model. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.

The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Similarly, the singular forms "a," "an," or "the" do not denote a limitation of quantity, but rather denote the presence of at least one, unless the context clearly dictates otherwise. The terms "comprises," "comprising," or the like, mean that the elements or items listed before "comprises" or "comprising" encompass the features, integers, steps, operations, elements, and/or components listed after "comprising" or "comprising," and do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object to be described is changed, the relative positional relationships may also be changed accordingly.

The jack aims to solve the problem that in the prior art, the auxiliary part is added for increasing the maximum height of the jack, and the height increasing function is lost due to the loss of the height increasing auxiliary part after the jack is disassembled; and the jack that the increase accessory was not dismantled surpasss the jack accommodation space that the car reserved when the minimum height, leads to the unable problem of accomodating.

The movable ejector is characterized in that two side plates of the movable ejector are oppositely provided with a strip-shaped hole and an inverted notch with a downward opening, and a pin shaft penetrates through the strip-shaped hole and the notch to install the movable ejector on the top of the upper supporting arm. The width of the notch is larger than the diameter of the through pin shaft, the through pin shaft can be separated from the opening of the notch, namely, the movable jacking head can rotate around the pin shaft penetrating through the strip-shaped hole, and the rotated movable jacking head can lie on the side of the upper supporting arm, so that the height of the jacking head is increased, the lowest height of a jack is not increased while more working scenes are met, the storage space of the jack is not increased, and the jack is suitable for more vehicle models; meanwhile, the movable ejection head is rotatably stored without a detachable structure, so that the service life is effectively ensured.

Examples

A scissor jack comprising a base 1; a support assembly mounted on the base 1; the movable top 8 comprises a top plate and two side plates, and the two side plates are oppositely arranged below the top plate; the both sides board of activity top 8 corresponds and is provided with bar hole 10 and breach 9, breach 9 is 7 style of calligraphy structures, the supporting component top is provided with first round pin axle 6 and second round pin axle 7, runs through respectively breach 9 and bar hole 10, the horizontal degree of freedom that the activity top 8 on first round pin axle 6 and the second round pin axle 7 had left right direction is established to the cover, first round pin axle 6 can be deviate from in the breach 9.

After the work is used, the first round pin axle 6 that runs through breach 9 can be deviate from the opening of breach 9, can be with activity top 8 around the second round pin axle 7 rotation that runs through bar hole 10 promptly, and activity top 8 after the rotation can be lain on one's side on upper support arm 2, because activity top 8 is rotatory around bar hole 10, and the activity top 8 that crouches on one's side can be further downwards along bar hole 10, has guaranteed minimum height. With the structure, when the mobile plug 8 works, the height of the mobile plug is increased, so that the mobile plug is suitable for more working scenes; after the working is finished, the lowest height of the jack is not increased, and the jack accommodating space is not increased, so that the lifting jack is suitable for more vehicle types; meanwhile, the movable ejector 8 is rotatably stored without being detached and separated, so that the effective movable ejector 8 is guaranteed not to be lost, and the service life is guaranteed.

Specifically, the width of the notch 9 is greater than the diameter of the first pin shaft 6, the end of the notch 9 is of a circular arc-shaped structure and is adapted to the shape of the first pin shaft 6 penetrating through the notch 9, two side edges of the middle part of the notch 9 are parallel, and the two side edges are not overlapped with a horizontal line when the movable top 8 is in a vertical state.

In the process of working and using, under the vertical state of the movable top 8, the end shape of the notch 9 is in accordance with the shape of the first pin shaft 6, so that the first pin shaft 6 is effectively ensured to be stable and not slide in the notch 9 in the bearing process; meanwhile, an included angle is formed between the lower side edge of the middle part of the notch 9 and a horizontal line, so that the first pin shaft 6 can not slide out in the notch 9 due to lateral force in the using process and stability is guaranteed.

Specifically, when the movable plug 8 is in a vertical state, the height of the side plate of the movable plug 8 is larger than the width.

The width of the side plate of the movable top 8 is less than the height. After the use, remove movable top about, deviate from the first round pin axle 6 that runs through of breach 9 along the opening, around the rotatory activity top 8 side-horizontal type of placing of second round pin axle 7 that runs through bar hole 10, the curb plate width of activity top 8 is less than highly, has guaranteed the minimum height of jack.

Specifically, the top plate and the two side plates of the movable top 8 are of an integral structure.

The top plate and the two side plates of the movable top 8 are of an integrally formed structure, so that the production and assembly cost is effectively reduced.

Specifically, the shape of the top plate of the movable plug 8 is adapted to the shape of the contact surface of the object to be supported.

The shape of the top plate of the movable jacking head 8 is adapted to the shape of the contact surface of the supported object, so that the jack and the supported object are stable and do not slide and generate danger in the using process.

Specifically, the supporting component includes two upper supporting arms 2, two lower supporting arms 3 and two fixed plates 11, and two fixed plates 11 set up in the 2 top outsides of two upper supporting arms relatively, two upper supporting arms 2 tops articulate respectively on fixed plate 11, and the other end articulates with 2 one ends of two lower supporting arms respectively, two the 2 other ends of lower supporting arm articulate respectively on base 1.

Specifically, the two upper support arms 2 and the two lower support arms 3 are equal in length and enclose an equilateral quadrilateral, and the movable top 8 and the base 1 are located on the same plumb line.

The equilateral quadrilateral is constituteed jointly to the last support arm 2 that length equals and lower support arm 3, acts on the pressure of the supported thing on the activity top 8, evenly transmits base 1 through equilateral quadrilateral's structure on, has guaranteed jack job stabilization, prevents to lead to jack life to reduce because of the atress inequality. Meanwhile, the movable jacking head 8 and the base 1 are positioned on the same plumb line, so that the vertical and upward working state of the jack is effectively ensured.

Specifically, the scissor jack further comprises a screw rod 4, two hinged positions of the upper support arm 2 and the lower support arm 3 are respectively provided with a nut and a bearing, and the screw rod penetrates through the bearing, penetrates through the nut and is in threaded connection with the nut.

Specifically, the end part of the screw rod 4, which is positioned at the outer side of the bearing, is provided with a screwing ring 5.

The spanner is used for rotating the screwing ring 5, the relative position of the upper supporting arm 2 and the lower supporting arm 3 is changed by moving the relative position of the screw rod 4 and the nut, the movable ejector 8 moves along the vertical direction under the driving of the upper supporting arm 2 and the lower supporting arm 3, and the bearing is supported by a supported object to move along the vertical direction, so that time and labor are saved.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims (9)

1. A scissor jack, comprising: comprises that

A base;

a support assembly mounted on the base;

the movable top comprises a top plate and two side plates, and the two side plates are oppositely arranged below the top plate; the both sides board correspondence of activity top is provided with a bar hole and a breach, the breach is 7 style of calligraphy structures, the supporting component top is provided with first round pin axle and second round pin axle, runs through respectively breach and bar hole, the activity top has the horizontal degree of freedom of left right direction, first round pin axle can be followed and is deviate from in the breach.

2. The scissor jack of claim 1, wherein: the width of the notch is larger than the shaft diameter of the first pin shaft, the end part of the notch is of an arc-shaped structure and is matched with the shape of the first pin shaft, two side edges of the middle part of the notch are parallel, and the two side edges are not overlapped with a horizontal line when the movable top head is in a vertical state.

3. The scissor jack of claim 2, wherein: and under the vertical state of the movable top, the height of the side plate of the movable top is larger than the width.

4. The scissor jack of claim 3, wherein: the movable top plate and the two side plates are of an integrated structure.

5. The scissor jack of claim 4, wherein: the shape of the movable top head top plate is adapted to the shape of the contact surface of the object to be supported.

6. The scissor jack of claim 1, wherein: the supporting component comprises two upper supporting arms, two lower supporting arms and two fixing plates, the two fixing plates are oppositely arranged on the outer sides of the top ends of the two upper supporting arms, the top ends of the two upper supporting arms are hinged to the fixing plates respectively, the other ends of the two upper supporting arms are hinged to one ends of the two lower supporting arms respectively, and the other ends of the two lower supporting arms are hinged to the base respectively.

7. The scissor jack of claim 6, wherein: the two upper supporting arms and the two lower supporting arms are equal in length and form an equilateral quadrilateral in a surrounding mode, and the movable jacking head and the base are located on the same plumb line.

8. The scissor jack of claim 7, wherein: the screw rod penetrates through the bearing, penetrates through the nut and is in threaded connection with the nut.

9. The scissor jack of claim 8, wherein: and a screwing ring is arranged at the end part of the screw rod, which is positioned at the outer side of the bearing.

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