Lubricating and oiling device for automobile door hinge
By combining the design of the limiting baffle, the limiting cylinder and the torsion spring, and the dual protection of the T-shaped plug and bolt fastening, the problems of easy tangling and inconvenient storage of the oil injection pipe and the unstable installation of the barrel cover are solved, realizing the stable storage and tight connection of the oil injection device, and improving its service life and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG LETES AUTO PARTS MANUFACTURING CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-05-05
AI Technical Summary
The existing lubrication and oil injection devices for automotive door hinges have oil injection pipes that are easy to tangle and inconvenient to store, and the caps are not securely installed, affecting service life and safety.
The design employs a combination of a limiting baffle, a limiting cylinder, and a torsion spring to ensure stable winding and storage of the oil injection pipe; the dual protection of T-shaped plug and bolt fastening ensures the secure installation of the barrel lid and barrel body.
This design achieves stable storage of the oil injection pipe, preventing the pipe from becoming loose or worn, ensuring a tight connection between the barrel cover and the barrel body, and improving the service life and safety of the device.
Smart Images

Figure CN224201496U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lubrication device technology, and in particular to a lubrication and oil injection device for automobile door hinges. Background Technology
[0002] A lubrication device is a device used to add lubricant to the friction parts of mechanical equipment, such as bearings, gears, and hinges, to reduce wear, lower frictional resistance, and extend service life. A car door hinge lubrication injection device is a lubrication device specifically designed for car door hinges. Its function is to periodically or as needed inject lubricant into the car door hinge parts to prevent the hinges from making abnormal noises, getting stuck, or rusting due to long-term friction. An oil injection machine is a commonly used lubrication injection device.
[0003] The existing lubrication and oiling devices for automotive door hinges typically do not have their built-in oiling hoses properly stored after use. Instead, they are simply stored by manually winding and dragging them, which can affect the lifespan of the oiling hoses. In addition, traditional oiling devices often use simple snap-fit structures at the connection between the cap and the body, which are prone to loosening.
[0004] Therefore, in response to the problems of easy tangling and inconvenient storage of the oil injection pipe of the above-mentioned automobile door hinge lubrication and oil injection device, as well as the problem of insecure installation of the device bucket cover, this utility model, through the cooperation of the limiting baffle, the limiting cylinder and the torsion spring, can flip upward to open the winding space. After being released, the torsion spring automatically resets, stably limiting the oil injection pipe between the support back plate and the limiting baffle, avoiding the loosening or dragging wear of the pipeline caused by traditional manual winding. At the same time, the double guarantee of T-shaped plug and bolt fastening achieves the effect of secure installation of the bucket cover and the bucket body. Utility Model Content
[0005] To overcome the common problems of easy tangling and inconvenient storage of oil injection pipes in automotive door hinge lubrication devices, as well as the problem of insecure installation of device lids.
[0006] The technical solution of this utility model is as follows: a lubrication and oil injection device for automobile door hinges, including a support base, an oil injection barrel body, an oil injection barrel cover body, a positioning support seat, and a push handle body. The support base is located below the oil injection barrel body. The oil injection barrel cover body is fitted to the top outer wall of the oil injection barrel body. Positioning support seats are symmetrically fixed to the side outer walls of the support base. The top outer walls of the two sets of positioning support seats are supported and connected to the push handle body. A friction ring pad is sleeved on the outer wall of the handle body at the gripping end.
[0007] A fastening and plugging assembly is installed between the body of the oil injector barrel and the body of the oil injector barrel cover, and an auxiliary wire harness mechanism is provided on the side of the push handle body.
[0008] Preferably, the fastening and plugging assembly includes auxiliary mounting blocks, positioning T-shaped strips, auxiliary mounting seats, and positioning T-shaped grooves. Four sets of auxiliary mounting blocks are circumferentially fixedly installed on the outer side wall of the oil injector barrel cover body. Positioning T-shaped strips are fixedly installed on the bottom outer wall of each of the four sets of auxiliary mounting blocks. Four sets of auxiliary mounting seats are circumferentially fixedly installed on the outer side wall of the oil injector barrel body at the top position. Positioning T-shaped grooves for the insertion and installation of positioning T-shaped strips are opened on the top outer wall of each of the four sets of auxiliary mounting seats.
[0009] Preferably, the auxiliary mounting base has a through-hole positioning threaded groove on the outer side wall of the positioning T-shaped groove, and the four sets of positioning T-shaped strips have corresponding alignment threaded grooves on their outer side walls. Fastening bolts are installed in the internal threads of the positioning threaded groove and the alignment threaded groove.
[0010] Preferably, a cylindrical base is fixedly installed on the bottom outer wall of the oil injection machine barrel body, and six sets of abutment pins are fixedly installed on the circumferential side outer wall of the cylindrical base. A cylindrical placement groove for placing the cylindrical base is correspondingly opened on the top outer wall of the support base, and six sets of abutment slots are correspondingly opened on the inner side wall of the support base located at the cylindrical placement groove. The abutment slots are configured as an "L" shape.
[0011] Preferably, an abutment spring is fixedly installed on the inner wall of the bottom end of the support base located at the cylindrical placement slot, and an annular limiting groove for limiting the abutment spring is provided on the outer wall of the bottom end of the cylindrical base.
[0012] Preferably, the auxiliary cable management mechanism includes positioning support columns, a support back plate, a limiting baffle, and a limiting cylinder. Positioning support columns are fixedly installed on the outer side walls of the push handle body at the two vertical rod positions. A support back plate is fixedly installed between the outer side walls of the two sets of positioning support columns. A notch is opened on the top outer wall of the support back plate. Part of the plate of the limiting baffle is located inside the notch. A limiting cylinder is fixedly installed on the outer side wall of the limiting baffle. Annular support grooves for the limiting cylinder to rotate are correspondingly opened on the inner walls of the two sides of the support back plate at the notch positions.
[0013] Preferably, the limiting cylinder cover is disposed outside the limiting support shaft, and both ends of the limiting support shaft are connected to the inner walls on both sides of the support back plate at the notch position. A torsion spring is sleeved on the outside of the limiting support shaft, one end of the torsion spring is connected to the outer side wall of the limiting support shaft, and the other end of the torsion spring is connected to the inner side wall of the limiting cylinder.
[0014] The beneficial effects of this utility model are:
[0015] 1. When in use, this automotive door hinge lubrication and oil injection device can be flipped upward to open the winding space through the cooperation of the limiting baffle, limiting cylinder and torsion spring. After being released, the torsion spring automatically resets, stably limiting the oil injection pipe between the support back plate and the limiting baffle, avoiding the loosening or dragging wear of the pipe caused by traditional manual winding. At the same time, two sets of positioning support columns provide symmetrical winding fulcrums, and the oil injection pipe can be wound in layers. With the guidance of the annular support groove at the notch, it ensures that there are no knots or jams in the winding process. It is especially suitable for storing long pipes, saving space and reducing the risk of cracks on the pipe surface caused by repeated folding.
[0016] 2. When in use, this automotive door hinge lubrication and oil injection device achieves a secure installation of the lid and body of the container through a dual guarantee of T-shaped insertion and bolt fastening. The insertion structure of the positioning T-shaped strip and positioning T-shaped groove first achieves quick positioning of the lid and body of the container, avoiding the incomplete installation caused by angle deviation of traditional buckles. Then, the fastening bolt passes through the positioning thread groove and the alignment thread groove to form a uniform circumferential fastening force, preventing the lid from bursting or the lubricant from leaking due to pressure fluctuations inside the container during the oil injection process. At the same time, the installation of the fastening bolt is based on the insertion of the positioning T-shaped strip to the bottom of the positioning T-shaped groove to ensure the tight installation of the oil injection machine container body and the oil injection machine container lid body. Attached Figure Description
[0017] Figure 1 The diagram shown is a three-dimensional structural schematic of the present invention.
[0018] Figure 2 The diagram shown is a three-dimensional structural diagram of the oil filling machine barrel cover body of this utility model.
[0019] Figure 3 This utility model is shown. Figure 2 Enlarged 3D structural diagram at point A;
[0020] Figure 4 The diagram shown is a three-dimensional structural diagram of the oil filling machine barrel body of this utility model.
[0021] Figure 5 The diagram shown is a three-dimensional structural diagram of the push handle body and positioning support column of this utility model.
[0022] Figure 6 The diagram shown is a three-dimensional structural diagram of the installation of the support back plate and the limiting baffle of this utility model.
[0023] Figure 7 This utility model is shown. Figure 6 Enlarged 3D structural diagram at point B.
[0024] Explanation of reference numerals in the attached drawings: 1. Support base; 2. Oil injector barrel body; 3. Oil injector barrel cover body; 4. Positioning support seat; 5. Push handle body; 6. Fastening plug-in assembly; 601. Auxiliary mounting block; 602. Positioning T-shaped strip; 603. Auxiliary mounting seat; 604. Positioning T-slot; 605. Positioning threaded groove; 606. Alignment threaded groove; 607. Fastening bolt; 701. Columnar base; 702. Abutment pin; 703. Columnar placement slot; 704. Abutment slot; 705. Abutment spring; 8. Auxiliary wire harness mechanism; 801. Positioning support column; 802. Support back plate; 803. Limiting baffle; 804. Limiting cylinder; 805. Limiting support shaft; 806. Torsion spring. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Please see Figures 1-7 This utility model provides a technical solution: a lubrication and oil injection device for automobile door hinges, including a support base 1, an oil injection barrel body 2, an oil injection barrel cover body 3, a positioning support seat 4, and a push handle body 5. The support base 1 is located below the oil injection barrel body 2. The oil injection barrel cover body 3 is fitted to the top outer wall of the oil injection barrel body 2. The positioning support seats 4 are symmetrically fixed to the side outer walls of the support base 1. The push handle body 5 is supported and connected to the top outer walls of the two sets of positioning support seats 4. A friction ring pad is sleeved on the outer wall of the handle body 5 at the gripping end.
[0027] A fastening connector 6 is installed between the oil filling machine barrel body 2 and the oil filling machine barrel cover body 3, and an auxiliary cable harness mechanism 8 is provided on the side of the push handle body 5.
[0028] The fastening and plugging assembly 6 includes auxiliary mounting blocks 601, positioning T-shaped strips 602, auxiliary mounting seats 603, and positioning T-shaped grooves 604. Four sets of auxiliary mounting blocks 601 are fixedly installed circumferentially on the outer side wall of the oil injector barrel cover body 3. Positioning T-shaped strips 602 are fixedly installed on the bottom outer wall of each of the four sets of auxiliary mounting blocks 601. Four sets of auxiliary mounting seats 603 are fixedly installed circumferentially on the outer side wall of the oil injector barrel body 2 at the top position. Positioning T-shaped grooves 604 for the positioning T-shaped strips 602 to be plugged into are opened on the top outer wall of each of the four sets of auxiliary mounting seats 603. Positioning threaded grooves 605 are opened through the outer side wall of the auxiliary mounting seat 603 at the position of the positioning T-shaped grooves 604. Alignment threaded grooves 606 are opened correspondingly on the outer side walls of the four sets of positioning T-shaped strips 602. Fastening bolts 607 are installed in the internal threads of the positioning threaded grooves 605 and the alignment threaded grooves 606.
[0029] The positioning T-shaped strip 602 and positioning T-shaped groove 604 here serve as a plug-in positioning for the installation of the oil injector barrel body 2 and the oil injector barrel cover body 3, while the positioning threaded groove 605, the alignment threaded groove 606 and the fastening bolt 607 serve as a tight fixing position for the installation of the oil injector barrel body 2 and the oil injector barrel cover body 3.
[0030] A cylindrical base plate 701 is fixedly installed on the bottom outer wall of the oil filling machine barrel body 2. Six sets of abutment pins 702 are fixedly installed on the circumferential side outer wall of the cylindrical base plate 701. A cylindrical placement groove 703 for placing the cylindrical base plate 701 is opened on the top outer wall of the support base 1. Six sets of abutment slots 704 are opened on the side inner wall of the support base 1 at the position of the cylindrical placement groove 703. The abutment slots 704 are set as "L" shaped structures. An abutment spring 705 is fixedly installed on the bottom inner wall of the support base 1 at the position of the cylindrical placement groove 703. An annular limiting groove for limiting the abutment spring 705 is opened on the bottom outer wall of the cylindrical base plate 701.
[0031] The annular limiting groove here serves to limit and support the anti-displacement spring 705, while the anti-blocking slot 704 utilizes its shape design to achieve the anti-blocking support and limiting effect on the anti-blocking post 702.
[0032] The auxiliary cable management mechanism 8 includes positioning support columns 801, a support back plate 802, a limiting baffle 803, and a limiting cylinder 804. Positioning support columns 801 are fixedly installed on the outer side walls of the push handle body 5 at the two vertical rod positions. A support back plate 802 is fixedly installed between the outer side walls of the two sets of positioning support columns 801. A notch is opened on the top outer wall of the support back plate 802, and part of the limiting baffle 803 is located inside the notch. A limiting cylinder 804 is fixedly installed on the outer side wall of the limiting baffle 803. The inner walls of the back plate 802 at the notch position are provided with annular support grooves for the rotatable installation of the limiting cylinder 804. The limiting cylinder 804 is covered outside the limiting support shaft 805, and both ends of the limiting support shaft 805 are connected to the inner walls of the back plate 802 at the notch position. A torsion spring 806 is sleeved on the outside of the limiting support shaft 805. One end of the torsion spring 806 is connected to the outer side wall of the limiting support shaft 805, and the other end of the torsion spring 806 is connected to the inner side wall of the limiting cylinder 804.
[0033] The positioning support column 801 is used to wind the oil injection pipe, while the limiting baffle 803 is used to limit and block the wound oil injection pipe, making it less likely to loosen and slip off as the position of the device changes.
[0034] Working principle: See Figure 1 As shown, the specific steps for connecting the oiling machine to the oiling pipe and lubricating the car door hinges are all based on existing technical methods and are conventional operating techniques without any modifications. Therefore, they will not be described in detail here.
[0035] See Figures 1-3 As shown, when it is necessary to install the oil injector barrel cover body 3 on top of the oil injector barrel body 2, the oil injector barrel cover body 3 first needs to be adjusted to a suitable position, and then the four sets of positioning T-shaped strips 602 on its side are inserted into the four sets of positioning T-shaped grooves 604 at the corresponding positions. When the positioning T-shaped strips 602 move to the bottom of the positioning T-shaped grooves 604, the installation positions of the positioning thread grooves 605 and the alignment thread grooves 606 are aligned. Then, the fastening bolts 607 are passed through the positioning thread grooves 605 and screwed to the bottom of the alignment thread grooves 606 to complete the installation process of the oil injector barrel body 2 and the oil injector barrel cover body 3. The subsequent disassembly is the same.
[0036] See Figure 1 and Figure 4As shown, when the oil injector barrel body 2 needs to be installed inside the support base 1, the oil injector barrel body 2 first needs to be adjusted to a suitable position, and then the six sets of abutment pins 702 at its bottom end need to be pushed into the six sets of abutment slots 704. At this time, the abutment springs 705 are correspondingly engaged in the annular limiting grooves. At the same time, the abutment springs 705 are continuously compressed by the downward pressure of the cylindrical base 701. When the abutment pins 702 move to the bottom of the abutment slots 704, they directly... Rotating the oil injector barrel body 2 will automatically drive the cylindrical base 701 to rotate, which in turn will drive the abutment pin 702 to rotate. The abutment pin 702 will then rotate and engage with the bottom of the abutment slot 704. At this point, the oil injector barrel body 2 can be released directly. The reaction force generated by the compression of the aforementioned abutment spring 705 will automatically push the cylindrical base 701 upward to confine the abutment pin 702 inside the abutment slot 704. Subsequent disassembly is carried out in the same way.
[0037] See Figure 1 , Figure 6 and Figure 7 As shown, when the oil injection pipe needs to be neatly stored, the limiting baffle 803 needs to be lifted upwards first. Then, the limiting baffle 803 will automatically rotate and drive the limiting cylinder 804 to rotate. At this time, the torsion spring 806 is tightened due to the rotation of the limiting cylinder 804. Then, the oil injection pipe is directly wound around to the outside of the two sets of positioning support columns 801. After the winding is completed, the limiting baffle 803 is released. Then, the reaction force generated by the tightening of the torsion spring 806 will automatically drive the limiting baffle 803 to reset, so as to seal and limit the oil injection pipe after winding.
[0038] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A lubrication and oil injection device for automobile door hinges, comprising a support base (1), an oil injection barrel body (2), an oil injection barrel cover body (3), a positioning support seat (4), and a push handle body (5), characterized in that: The support base (1) is located below the oil injector barrel body (2). The top outer wall of the oil injector barrel body (2) is fitted with an oil injector barrel cover body (3). The side outer wall of the support base (1) is symmetrically fixed with positioning support seats (4). The top outer walls of the two sets of positioning support seats (4) are connected and supported by push handle body (5). The outer wall of the push handle body (5) at the gripping end is fitted with a friction ring pad. A fastening and plugging assembly (6) is installed between the oil injector barrel body (2) and the oil injector barrel cover body (3), and an auxiliary wire harness mechanism (8) is provided on the side of the push handle body (5).
2. The lubrication and oil injection device for automobile door hinges according to claim 1, characterized in that: The fastening and plugging assembly (6) includes an auxiliary mounting block (601), a positioning T-shaped strip (602), an auxiliary mounting seat (603), and a positioning T-shaped groove (604). Four sets of auxiliary mounting blocks (601) are fixedly installed on the outer side wall of the oil injector barrel cover body (3). The bottom outer wall of each of the four sets of auxiliary mounting blocks (601) is fixedly installed with a positioning T-shaped strip (602). Four sets of auxiliary mounting seats (603) are fixedly installed on the outer side wall of the oil injector barrel body body (2) at the top position. The top outer wall of each of the four sets of auxiliary mounting seats (603) is provided with a positioning T-shaped groove (604) for the positioning T-shaped strip (602) to be inserted and installed.
3. The lubrication and oil injection device for automobile door hinges according to claim 2, characterized in that: The auxiliary mounting base (603) has a through-hole positioning threaded groove (605) on the outer side wall of the positioning T-slot (604), and the four sets of positioning T-slots (602) have corresponding alignment threaded grooves (606) on their outer side walls. The internal threads of the positioning threaded groove (605) and the alignment threaded groove (606) are fitted with fastening bolts (607).
4. The lubrication and oil injection device for automobile door hinges according to claim 1, characterized in that: A cylindrical base plate (701) is fixedly installed on the bottom outer wall of the oil injection machine barrel body (2). Six sets of abutment pins (702) are fixedly installed on the side outer wall of the cylindrical base plate (701). A cylindrical placement groove (703) for placing the cylindrical base plate (701) is opened on the top outer wall of the support base (1). Six sets of abutment slots (704) are opened on the side inner wall of the support base (1) at the position of the cylindrical placement groove (703). The abutment slots (704) are set as "L" shaped structures.
5. The lubrication and oil injection device for an automobile door hinge according to claim 4, characterized in that: The support base (1) is fixedly installed with an abutment spring (705) on the inner wall of the bottom end of the cylindrical placement groove (703), and the outer wall of the bottom end of the cylindrical base (701) is provided with an annular limiting groove for limiting the abutment spring (705).
6. The lubrication and oil injection device for automobile door hinges according to claim 1, characterized in that: The auxiliary cable management mechanism (8) includes a positioning support column (801), a support back plate (802), a limiting baffle (803), and a limiting cylinder (804). The push handle body (5) is fixedly installed with positioning support columns (801) on the outer side walls of the two vertical rod positions. The support back plate (802) is fixedly installed between the outer side walls of the two sets of positioning support columns (801). The top outer wall of the support back plate (802) has a notch. Part of the plate of the limiting baffle (803) is located inside the notch. The outer side wall of the limiting baffle (803) is fixedly installed with a limiting cylinder (804). The inner walls of the two sides of the support back plate (802) at the notch position have corresponding annular support grooves for the limiting cylinder (804) to be rotated and installed.
7. The lubrication and oil injection device for an automobile door hinge according to claim 6, characterized in that: The limiting cylinder (804) is covered outside the limiting support shaft (805), and both ends of the limiting support shaft (805) are connected to the inner walls of the support back plate (802) at the notch position. A torsion spring (806) is sleeved on the outside of the limiting support shaft (805). One end of the torsion spring (806) is connected to the outer side wall of the limiting support shaft (805), and the other end of the torsion spring (806) is connected to the inner side wall of the limiting cylinder (804).