A structure of a jack head

Abstract

The utility model belongs to the technical field of jack, especially relates to a jack head structure, the top head is installed in the hydraulic lifting column's top of jack, the top head includes detachable connection's top head main part and connecting seat, be provided with connecting rod on the top head main part, be provided with the connecting hole of adapting with connecting rod on connecting seat, connecting rod side is provided with the abutting face, the side wall of connecting hole is provided with the locating surface of adapting with abutting face, abutting face can abut on locating surface to thereby limit the relative rotation of top head main part and connecting seat, connecting hole side is provided with the limit slot, be provided with the limiting piece and elastic part on connecting rod, elastic part can drive limiting piece and limit slot cooperation, and avoid connecting rod and connecting hole to separate, and limiting piece or limit slot side is provided with the inclined first drive surface, the utility model's purpose lies in providing a kind of jack head structure of the jack of the user of convenient use replacement.

Description

Technical Field

[0001] This utility model belongs to the field of jack technology, and specifically relates to a jack head structure. Background Technology

[0002] A car jack is a common tool in car repair. During vehicle repair, a car jack can be used for lifting, supporting, and other tasks.

[0003] Some car jacks on the market are equipped with multiple jack heads, allowing users to replace them as needed. For example, Chinese utility model patent CN202321378594.0 discloses a jack head that is easy to replace, which includes a large piston. A base is fixedly connected to the lower outer surface of the large piston. An interface is opened at the center of the upper outer surface of the large piston, and a support column is slidably connected to the interface. A bayonet is opened on the left inner surface of the support column, and a groove is provided on the front inner surface of the bayonet near the left side. A pressing head is slidably connected to the inner surface of the groove. A first spring is fixedly connected to the left outer surface of the pressing head near the upper end. A sliding plate is fixedly connected to the center of the left outer surface of the pressing head. A connector is movably connected to the inner surface of the interface. An opening is opened on the lower left inner surface of the connector. A second spring is fixedly connected to the right inner surface of the opening, and a bayonet is fixedly connected to the other end of the second spring. A soft pad is fixedly connected to the center of the bottom inner surface of the large piston.

[0004] The above structure controls the large piston and support column to be relatively fixed through the clamp and the clamp, which is conducive to the stable connection of the top head. However, the structure is relatively complex and inconvenient to assemble and produce. In addition, during the disassembly process, the user needs to drive the two sliding plates to move at the same time, which is inconvenient for the quick disassembly of the top head. Summary of the Invention

[0005] In order to overcome the defects in the prior art, the purpose of this utility model is to provide a jack head structure that is convenient for users to use and replace.

[0006] The purpose of this utility model is achieved as follows:

[0007] A jack head structure is provided, wherein the jack head is installed on the top of the hydraulic lifting support of the jack head, the jack head includes a detachably connected jack head body and a connecting seat, the jack head body is provided with a connecting rod, the connecting seat is provided with a connecting hole adapted to the connecting rod, the side of the connecting rod is provided with a pressing surface, and the side wall of the connecting hole is provided with a positioning surface adapted to the pressing surface, the pressing surface can abut against the positioning surface to restrict the relative rotation between the jack head body and the connecting seat;

[0008] The connecting hole is provided with a limiting groove on its side, and the connecting rod is provided with at least one limiting member and an elastic member for driving the limiting member to reset. The elastic member can drive the limiting member to cooperate with the limiting groove and prevent the connecting rod from disengaging from the connecting hole. The limiting member or the limiting groove is provided with an inclined first driving surface on its side. External force controls the movement of the top head body along the extension direction of the connecting hole. The first driving surface can be subjected to the relative force of the limiting groove sidewall or the limiting member, and cause the limiting member to move relative to the connecting rod, thereby disengaging the limiting member from the limiting groove, and thus disassembling the top head body and the connecting seat relative to each other.

[0009] The present invention is further configured such that: the side of the connecting rod is provided with an installation groove, the limiting member and the elastic member are both provided in the installation groove, and the end of the installation groove is provided with a constriction, the constriction can prevent the limiting member from detaching from the installation groove, the elastic member can drive the limiting member to reset and allow the limiting member to pass through the installation groove, and the end of the limiting member that passes through the installation groove is provided with an inclined first driving surface.

[0010] The present invention is further configured such that: the limiting member is a spherical ball, and when the connecting rod moves along the extension direction of the connecting hole, the limiting member can roll along the side wall of the connecting hole and rotate relative to the limiting member in the mounting groove.

[0011] The present invention is further configured such that: at least two positioning surfaces are provided on the outer periphery of the connecting hole, the positioning surfaces are evenly arranged along the central circumference of the connecting hole, and the mating surface can cooperate with each positioning surface respectively, so that the top body and the connecting seat have multiple installation methods.

[0012] The present invention is further configured such that the limiting groove is arranged in a ring around the outer periphery of the connecting hole.

[0013] The present invention is further configured such that: the connecting hole is located at the upper end of the connecting seat, the connecting hole includes vertically distributed mounting holes and positioning holes, the positioning holes are located at the bottom of the mounting holes, and the mounting holes are circular holes, the maximum diameter of the positioning holes is smaller than the diameter of the mounting holes, the positioning surface is the side wall of the positioning holes, and the limiting groove is located on the side wall of the mounting holes.

[0014] The present invention is further configured such that: the limiting groove is disposed on the outer periphery of the bottom of the mounting hole, and the lower end sidewall of the limiting groove forms a stepped structure with the mounting hole.

[0015] The present invention is further configured such that: a support plate supporting the object is provided on the top body, and an extension is provided between the support plate and the connecting rod.

[0016] The present invention is further configured such that the length of the connecting rod is greater than the depth of the connecting hole, so that the support plate or extension can abut against the end of the connecting hole.

[0017] The present invention is further configured such that: a guide slope is provided at the upper end of the connecting hole, the guide slope can abut against the limiting member and drive the limiting member to slide, so that the limiting member can be inserted into the connecting hole and cooperate with the limiting groove.

[0018] The advantages of this utility model compared to the prior art are:

[0019] 1. In this utility model, the elastic element keeps the limiting element connected to the limiting groove, preventing the top head body and the connecting seat from accidentally disengaging during use, thus facilitating user operation. Furthermore, because the limiting element or the limiting groove has an inclined first driving surface on its side, when the user forcefully controls the top head body to move along the extension direction of the connecting hole, the first driving surface can disengage the limiting element from the limiting groove, thereby allowing the top head body and the connecting seat to be disassembled relative to each other. This facilitates quick disassembly and replacement of the top head. The setting of the abutting surface and the positioning surface in this structure prevents the top head body and the connecting seat from rotating relative to each other, which is beneficial for the stable installation of the top head body and the connecting seat, and makes it convenient for user operation.

[0020] 2. The mounting groove and constriction structure of this utility model are simple, which facilitates the stable installation of the limiting component and the elastic component. Moreover, the structure does not require additional parts to limit the movement range of the limiting component, which facilitates the production and assembly of the jack head. The structure of the spherical ball facilitates the flexible rotation of the limiting component, reduces the wear of the limiting component during use, and the structure facilitates the contraction of the limiting component under the force on the side, which is convenient for the user to control the relative disassembly and installation of the jack head body and the connecting seat.

[0021] 3. The multiple positioning surfaces evenly arranged around the circumference of this utility model enable the top head body and the connecting seat to have multiple installation methods, which facilitates the flexible assembly of the top head body and the connecting seat and makes it convenient for users to use; the limiting groove arranged in a ring around the connecting hole facilitates production and processing, and makes it easy for the limiting component to cooperate with the limiting groove in various installation methods.

[0022] 4. The mounting hole in this utility model is convenient for production and processing, which helps to increase the length of the connecting hole and improve the connection strength between the jack body and the connecting seat, thus avoiding damage to the connecting hole and connecting rod under stress during use. Since the limiting groove is set on the outer periphery of the bottom of the mounting hole, this structure helps to reduce the step part in the connecting hole, which helps to reduce the wear of the connecting rod during use, and reduces the jamming of the connecting rod and the connecting hole caused by the step part during use, thus facilitating the rapid assembly of the jack head.

[0023] 5. The support plate in this utility model facilitates a stable connection between the jack and the object. The extension increases the overall length of the jack body, allowing manufacturers to adjust the extension to produce jack bodies of different specifications, thus facilitating production and processing. Since the length of the connecting rod is greater than the depth of the connecting hole, this structure facilitates support of the jack body through the upper end of the connecting seat, reducing stress deformation of the connecting rod and connecting hole during use and extending the life of the jack head. The guide slope facilitates the quick insertion of the limiting component into the connecting hole, enabling rapid assembly of the jack body and the connecting seat, and making it convenient for users. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of Embodiment 1 of this utility model;

[0025] Figure 2 This is a cross-sectional view of Embodiment 1 of this utility model;

[0026] Figure 3 This is a schematic diagram of the connecting seat in this utility model;

[0027] Figure 4 This is a cross-sectional view of the connecting seat in this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the top head body in Embodiment 1 of this utility model;

[0029] Figure 6 This is a cross-sectional view of the main body of the top head in Embodiment 1 of this utility model;

[0030] Figure 7 This is a structural schematic diagram of Embodiment 2 of this utility model;

[0031] Figure 8 This is a cross-sectional view of Embodiment 2 of this utility model;

[0032] Figure 9 This is a schematic diagram of the structure of the top head body in Embodiment 2 of this utility model.

[0033] The labels in the diagram have the following meanings: 1-Connecting seat; 11-Connecting hole; 12-Limiting groove; 13-Guide slope; 111-Mounting hole; 112-Positioning hole; 2-Top body; 21-Support plate; 22-Connecting rod; 23-Extension; 221-Mounting part; 222-Positioning part; 223-Mounting groove; 224-Constriction; 225-Firming surface; 3-Limiting element; 4-Elastic element. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0035] See Figures 1 to 9As shown, a jack head structure is provided. The jack head is installed on the top of the hydraulic lifting support of the jack. The jack head includes a detachably connected jack head body 2 and a connecting seat 1. A connecting rod 22 is provided on the jack head body 2, and a connecting hole 11 adapted to the connecting rod 22 is provided on the connecting seat 1. A pressing surface 225 is provided on the side of the connecting rod 22, and a positioning surface adapted to the pressing surface 225 is provided on the side wall of the connecting hole 11. The pressing surface 225 can abut against the positioning surface to restrict the relative rotation between the jack head body 2 and the connecting seat 1. The setting of the pressing surface 225 and the positioning surface can prevent the relative rotation between the jack head body 2 and the connecting seat 1, which is conducive to the stable installation of the jack head body 2 and the connecting seat 1 and convenient for users.

[0036] The connecting hole 11 is provided with a limiting groove 12 on its side. The connecting rod 22 is provided with at least one limiting member 3 and an elastic member 4 for driving the limiting member 3 to reset. The elastic member 4 can drive the limiting member 3 to cooperate with the limiting groove 12 and prevent the connecting rod 22 from disengaging from the connecting hole 11. The limiting member 3 or the limiting groove 12 is provided with an inclined first driving surface on its side. When an external force controls the head body 2 to move along the extension direction of the connecting hole 11, the first driving surface can be subjected to the relative force of the side wall of the limiting groove 12 or the limiting member 3, and cause the limiting member 3 to move relative to the connecting rod 22, thereby causing the limiting member 3 to disengage from the limiting groove 12. This allows the top body 2 and the connecting seat 1 to be disassembled relative to each other. In this structure, the elastic element 4 keeps the limiting element 3 connected to the limiting groove 12 and prevents the top body 2 and the connecting seat 1 from accidentally disassembling during use, making it convenient for users. Since the limiting element 3 or the limiting groove 12 is provided with an inclined first driving surface, when the user forcefully controls the top body 2 to move along the extension direction of the connecting hole 11, the first driving surface can disassemble the limiting element 3 from the limiting groove 12, thereby allowing the top body 2 and the connecting seat 1 to be disassembled relative to each other, which facilitates the quick disassembly of the top body 2 and the connecting seat 1 and the quick disassembly and replacement of the top.

[0037] The connecting seat 1 is detachably connected to the hydraulic lifting support of the jack. In this utility model, the connecting seat 1 has a threaded part on its outer periphery that mates with the hydraulic lifting support. In the attached drawings of this utility model, the connecting rod 22 is provided with a limiting member 3 and an elastic member 4. In actual production, multiple sets of limiting members 3 and elastic members 4 can be provided on the outer periphery of the connecting rod 22. The installation methods of each limiting member 3 and elastic member 4 are the same. Those skilled in the art can implement this technical solution based on the attached drawings and the contents of the specification.

[0038] In this utility model, the connecting rod 22 has a mounting groove 223 on its side. The limiting member 3 and the elastic member 4 are both set in the mounting groove 223, and the end of the mounting groove 223 is provided with a constriction 224. The constriction 224 can prevent the limiting member 3 from detaching from the mounting groove 223. The elastic member 4 can drive the limiting member 3 to reset and allow the limiting member 3 to pass through the mounting groove 223. The end of the limiting member 3 that passes through the mounting groove 223 is provided with an inclined first driving surface. The structure of the mounting groove 223 and the constriction 224 is simple, which facilitates the stable installation of the limiting member 3 and the elastic member 4. Moreover, this structure does not require additional parts to limit the movement range of the limiting member 3, which facilitates the production and assembly of the jack head.

[0039] Preferably, the limiting member 3 is a spherical ball. When the connecting rod 22 moves along the extension direction of the connecting hole 11, the limiting member 3 can roll along the side wall of the connecting hole 11 and rotate relative to each other in the mounting groove 223. The structure of the spherical ball facilitates the flexible rotation of the limiting member 3, reduces the wear of the limiting member 3 during use, and the structure facilitates the shrinkage of the limiting member 3 under the force on the side, making it convenient for the user to control the relative disassembly and installation of the top body 2 and the connecting seat 1. The constriction 224 in this utility model has an arc-shaped surface that is adapted to the spherical ball.

[0040] The outer periphery of the connecting hole 11 is provided with at least two positioning surfaces. The positioning surfaces are evenly arranged along the central circumference of the connecting hole 11. The mating surface 225 can cooperate with each positioning surface respectively, so that the top body 2 and the connecting seat 1 have multiple installation methods. The multiple positioning surfaces are evenly arranged around the circumference, which makes it convenient for the top body 2 and the connecting seat 1 to be flexibly assembled and convenient for the user.

[0041] The limiting groove 12 described in this utility model is arranged in a ring around the outer periphery of the connecting hole 11. The limiting groove 12 arranged in a ring around the outer periphery of the connecting hole 11 is convenient for production and processing, and facilitates the cooperation between the limiting component 3 and the limiting groove 12 in various installation methods.

[0042] Preferably, a guide slope 13 is provided at the upper end of the connecting hole 11. The guide slope 13 can abut against the limiting member 3 and drive the limiting member 3 to slide, so that the limiting member 3 can pass into the connecting hole 11 and cooperate with the limiting groove 12. The setting of the guide slope 13 facilitates the quick insertion of the limiting member 3 into the connecting hole 11, facilitates the quick assembly of the top body 2 and the connecting seat 1, and is convenient for the user.

[0043] The connecting hole 11 is provided on the upper end of the connecting seat 1. The connecting hole 11 includes a vertically distributed mounting hole 111 and a positioning hole 112. The positioning hole 112 is provided at the bottom of the mounting hole 111. The mounting hole 111 is a round hole. The maximum diameter of the positioning hole 112 is smaller than the diameter of the mounting hole 111. The positioning surface is the side wall of the positioning hole 112. The limiting groove 12 is provided on the side wall of the mounting hole 111. The mounting hole 111 is convenient for production and processing, which is conducive to increasing the length of the connecting hole 11, which is conducive to improving the connection strength between the top body 2 and the connecting seat 1, and avoiding damage to the connecting hole 11 and the connecting rod 22 under stress during use.

[0044] In this utility model, the positioning hole 112 is a regular polygonal hole, and the connecting rod 22 includes a mounting part 221 and a positioning part 222 that respectively cooperate with the mounting hole 111 and the positioning hole 112. The positioning part 222 is a polygonal column adapted to the positioning hole 112, and the abutting surface 225 is the side wall of the positioning part 222.

[0045] The limiting groove 12 is provided on the outer periphery of the bottom of the mounting hole 111, and the lower side wall of the limiting groove 12 forms a stepped structure with the mounting hole 111. This structure helps to reduce the stepped part in the connecting hole 11, which helps to reduce the wear of the connecting rod 22 during use, and reduces the jamming caused by the stepped part during the connection process between the connecting rod 22 and the connecting hole 11, thus facilitating the rapid assembly of the jack head.

[0046] The top body 2 is provided with a support plate 21 for supporting the object. The upper end of the support plate 21 is provided with an anti-slip surface. In this utility model, the support plate 21 can be directly connected to the connecting rod 22. An extension part 23 can also be provided between the support plate 21 and the connecting rod 22, which includes the following two embodiments:

[0047] Example 1

[0048] The support plate 21 is directly connected to the connecting rod 22, and the connecting rod 22 is connected to the center of the bottom of the support plate 21.

[0049] Example 2

[0050] The support plate 21 has an extension 23 connected to its bottom center, and a connecting rod 22 is disposed at the bottom of the extension 23. Preferably, the diameter of the extension 23 is larger than the maximum diameter of the connecting rod 22.

[0051] In this invention, the length of the connecting rod 22 is greater than the depth of the connecting hole 11, so that the support plate 21 or the extension can abut against the end of the connecting hole 11. This structure facilitates the support of the top body 2 through the upper end of the connecting seat 1, which helps to reduce the stress deformation of the connecting rod 22 and the connecting hole 11 during use and helps to extend the life of the jack. In this structure, when there is no extension 23 on the top body 2, the bottom of the support plate 21 directly abuts against the upper end of the connecting seat 1. When there is an extension 23 on the top body 2, the lower end of the extension 23 abuts against the upper end of the connecting seat 1.

[0052] Preferably, the length of the mounting part 221 is less than the depth of the mounting hole 111. This structure can prevent the mounting part 221 from abutting against the bottom of the mounting hole 111 and facilitate the support of the end of the connecting seat 1 for the top body 2.

[0053] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A jack head structure, wherein the jack head is installed on the top of the hydraulic lifting support of the jack, the jack head comprising a detachably connected jack head body (2) and a connecting seat (1), characterized in that: The top body (2) is provided with a connecting rod (22), and the connecting seat (1) is provided with a connecting hole (11) adapted to the connecting rod (22). The side of the connecting rod (22) is provided with a pressing surface (225), and the side wall of the connecting hole (11) is provided with a positioning surface adapted to the pressing surface (225). The pressing surface (225) can abut against the positioning surface to restrict the relative rotation between the top body (2) and the connecting seat (1). The connecting hole (11) is provided with a limiting groove (12) on its side. The connecting rod (22) is provided with at least one limiting member (3) and an elastic member (4) for driving the limiting member (3) to reset. The elastic member (4) can drive the limiting member (3) to cooperate with the limiting groove (12) and prevent the connecting rod (22) from disengaging from the connecting hole (11). The limiting member (3) or the limiting groove (12) is provided with an inclined first driving surface on its side. The external force controls the head body (2) to move along the extension direction of the connecting hole (11). The first driving surface can be subjected to the relative force of the side wall of the limiting groove (12) or the limiting member (3) and cause the limiting member (3) to move relative to the connecting rod (22), thereby causing the limiting member (3) to disengage from the limiting groove (12) and thus causing the head body (2) and the connecting seat (1) to be disassembled relative to each other.

2. The jack head structure according to claim 1, characterized in that: The connecting rod (22) has a mounting hole (111) on its side. The limiting member (3) and the elastic member (4) are both set in the mounting hole (111). The end of the mounting hole (111) is provided with a constriction (224). The constriction (224) can prevent the limiting member (3) from disengaging from the mounting hole (111). The elastic member (4) can drive the limiting member (3) to reset and make the limiting member (3) pass through the mounting hole (111). The end of the limiting member (3) that passes through the mounting hole (111) is provided with an inclined first driving surface.

3. The jack head structure according to claim 2, characterized in that: The limiting member (3) is a spherical ball. When the connecting rod (22) moves along the extension direction of the connecting hole (11), the limiting member (3) can roll along the side wall of the connecting hole (11) and rotate relative to the mounting hole (111).

4. The jack head structure according to claim 1, 2, or 3, characterized in that: The outer periphery of the connecting hole (11) is provided with at least two positioning surfaces. The positioning surfaces are evenly arranged along the central circumference of the connecting hole (11). The mating surface (225) can cooperate with each positioning surface respectively, so that the top body (2) and the connecting seat (1) have multiple installation methods.

5. The jack head structure according to claim 4, characterized in that: The limiting groove (12) is arranged in a ring around the outer periphery of the connecting hole (11).

6. The jack head structure according to claim 1, 2, 3, or 5, characterized in that: The connecting hole (11) is located at the upper end of the connecting seat (1). The connecting hole (11) includes a vertically distributed mounting groove (223) and a positioning hole (112). The positioning hole (112) is located at the bottom of the mounting groove (223), and the mounting groove (223) is a round hole. The maximum diameter of the positioning hole (112) is smaller than the diameter of the mounting groove (223). The positioning surface is the side wall of the positioning hole (112). The limiting groove (12) is located on the side wall of the mounting groove (223).

7. The jack head structure according to claim 6, characterized in that: The limiting groove (12) is located on the outer periphery of the bottom of the mounting groove (223), and the lower side wall of the limiting groove (12) forms a stepped structure with the mounting groove (223).

8. The jack head structure according to claim 1, 2, 3, 5, or 7, characterized in that: The top body (2) is provided with a support plate (21) for supporting the object, and an extension part (23) is provided between the support plate (21) and the connecting rod (22).

9. The jack head structure according to claim 8, characterized in that: The length of the connecting rod (22) is greater than the depth of the connecting hole (11), so that the support plate (21) or the extension can abut against the end of the connecting hole (11).

10. The jack head structure according to claim 1, 2, 3, 5, 7, or 9, characterized in that: The upper end of the connecting hole (11) is provided with a guide slope (13), which can abut against the limiting member (3) and drive the limiting member (3) to slide, so that the limiting member (3) can be inserted into the connecting hole (11) and cooperate with the limiting groove (12).

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