Lock cylinder for lifter

Abstract

The lock cylinder for the lifter comprises a shaft core, the shaft core comprises a connecting end and a locking end, a torsional spring is sleeved on the outer shaft diameter of the shaft core in an interference fit mode, an unlocking piece is arranged at one end outside the torsional spring, a torsional spring fixing seat is arranged at the other end of the torsional spring, and the torsional spring, the unlocking piece and the torsional spring fixing seat form a locking mechanism. And the locking mechanism longitudinally moves along the shaft core and forms a locking relationship with the shaft core. After the torsion spring fixing base is fixed, the torsion spring is loosened through torsion of the unlocking piece, then the shaft core can do axial non-stage-difference movement in the torsion spring, non-stage-difference adjustment is achieved, at the moment, the lifter is installed, the seat can be adjusted in a non-stage-difference mode through the lifter, and the seat is suitable for random adjustment of different people. And after the unlocking sheet is loosened, the torsion spring holds the shaft core, so that the shaft core is locked and fixed.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts, in particular to a lock core for a lifter. Background Art

[0002] The seat height and angle of the driver and passengers' seats can be adjusted to increase comfort, which requires adjusting the car seat lifter. Drive control is often used in the adjustment process. Electric drive or mechanical control is used during driving. Gears or limits are used in the adjustment process. Due to individual differences, there may be uncertainties that may cause inadequate adjustment.

[0003] The Chinese patent number: CN220842281U provides an easily adjustable zero-gravity car seat, which uses a high-profile motor to drive the left connecting plate or the right connecting plate to rotate; to solve the problems of limited forward tilt angle and height adjustment range and unstable operation in the prior art.

[0004] Chinese patent number: CN 220785517 U discloses a zero-gravity car seat bracket, a drive motor and a control rod connected to the drive motor, which can help passengers improve their body posture, promote blood circulation, reduce mental fatigue and physical stress, and improve riding comfort and health.

[0005] Chinese patent number: CN 219821254 U discloses a car seat lifting device, wherein an adjustment mechanism and a lifting mechanism are connected to a base frame, and the car seat lifting device realizes independent front and rear adjustment of the seat through a front hand wheel and a rear hand wheel, and realizes adjustment of the seat inclination and height, and has a simple connection structure and is convenient for adjustment.

[0006] The above patent documents can all achieve lifting and lowering adjustment, but are either limited to electric (high cost) or have gears and cannot achieve stepless adjustment. The key lies in whether the structure of the lock core can achieve stepless adjustment. Utility Model Content

[0007] In view of the above problems in the background technology, the purpose of the present invention is to achieve stepless adjustment of a seat lifting device, and a lock cylinder for a lifter is provided.

[0008] To this end, the technical solution of the utility model is a lock core for a lifter, including a shaft core, the shaft core including a connecting end and a locking end, characterized in that a torsion spring is sleeved on the outer shaft diameter of the shaft core with an interference fit, wherein an unlocking piece is provided at one end outside the torsion spring, and a torsion spring fixing seat is provided at the other end, the torsion spring, the unlocking piece and the torsion spring fixing seat form a locking mechanism; the locking mechanism moves along the longitudinal direction of the shaft core and forms a locking relationship with the shaft core.

[0009] The effect is: after the torsion spring fixing seat is fixed, the torsion spring can be loosened by utilizing the torque of the unlocking piece so that the shaft core can move axially without step difference inside the torsion spring, thereby realizing stepless adjustment. At this time, installing the lifter can realize stepless adjustment of the seat through the lifter, which is suitable for random adjustment by different groups of people; when the unlocking piece is loosened, the torsion spring will hold the shaft core, thereby realizing the locking and fixation of the shaft core.

[0010] A further improvement is that the unlocking piece is an axially through-tube structure, wherein a connecting piece is also provided outwardly of the unlocking piece.

[0011] The effect is that the unlocking piece is an axially through-tube structure, which can accommodate the torsion spring in its tube structure to form an enclosing structure, which not only limits the maximum torque of the torsion spring and protects the spring well, but also provides a support point for the torsion spring, so that the torsion spring can be unlocked smoothly and the shaft core can move smoothly.

[0012] A further improvement is that the unlocking piece is provided with a guide groove along its length direction, wherein the connecting piece extends outward, a flexible shaft connecting point is provided on the connecting piece, and a torsion spring limiting notch is provided at the root of the connecting piece.

[0013] The effect is that the setting of the guide groove facilitates the smooth entry of the torsion spring, forming a semi-enclosed structure; the soft shaft connection point in the connecting piece provides an external force fulcrum for the next step of unlocking, and at the same time the notch limits the torsion spring, so that the torsion spring can be unlocked within a very small gap range.

[0014] A further improvement is that the torsion spring fixing seat is provided with a torsion spring clamping groove along its axial direction.

[0015] The effect is that the setting of the torsion spring slot provides a fulcrum point for the torsion spring, making it convenient to use the torsion spring.

[0016] A further improvement is that a slope or inclined surface transition is also provided on the inner axial diameter surface of the torsion spring fixing seat.

[0017] A further improvement is that a boss is provided on the inner axial diameter surface of the unlocking piece corresponding to the torsion spring fixing seat, wherein the boss is a trapezoidal structure.

[0018] The effect is that the slope or inclined plane transition plays a role in strength support and giving way, forming a certain redundant space for the torsion spring during the torsion process; the inner shaft diameter surface of the unlocking piece is provided with a boss, wherein the trapezoidal structure of the boss and the inner shaft diameter surface of the torsion spring fixing seat are also provided with a slope or inclined plane transition, which not only plays a role in strength support and giving way, but also forms a certain redundant space for the torsion spring during the torsion process, facilitating the movement of the torsion spring.

[0019] A further improvement is that torsion springs and torsion spring fixing seats are symmetrically provided at both ends of the unlocking piece.

[0020] The effect is that one unlocking piece unlocks two torsion springs, achieving a smaller diameter shaft core and a clamping force for the torsion spring, which can reduce the weight. Beneficial Effects

[0021] The utility model utilizes the torsion force of the unlocking piece to loosen the torsion spring so that the shaft core can move axially without step difference inside the torsion spring, thereby realizing stepless adjustment. At this time, installing a lifter can realize stepless adjustment of the seat through the lifter, which is suitable for arbitrary adjustment by different groups of people; the clamping force of the shaft core with smaller diameter and the torsion spring can be realized, and the weight can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional view of the utility model.

[0023] Figure 2 It is an appearance diagram of the utility model.

[0024] Figure 3 yes Figure 2 Top view of the .

[0025] Figure 4 yes Figure 3 sectional view of .

[0026] Figure 5 It is a three-dimensional view of the shaft core.

[0027] Figure 6 It is a three-dimensional view of a torsion spring.

[0028] Figure 7 It is a stereoscopic view of the unlocking piece.

[0029] Figure 8 It is a cross-sectional view of the torsion spring fixing seat.

[0030] Fig. 9 It is a three-dimensional view of the torsion spring fixing seat.

[0031] Reference numerals:

[0032] 1-shaft core, 101-connecting end, 102-locking end, 2-torsion spring, 3-unlocking piece, 301-connecting piece, 302-guide groove, 303-flexible shaft connection point, 304-torsion spring limiting notch, 305-boss, 4-torsion spring fixing seat, 401-torsion spring slot, 402-slope or inclined transition. DETAILED DESCRIPTION

[0033] The utility model Figure 1-9 shown.

[0034] A lock core for a lifter includes a shaft core 1, wherein the shaft core 1 includes a connecting end 101 and a locking end 102, a torsion spring 2 is sleeved on the outer shaft diameter of the shaft core 1 in an interference fit, wherein an unlocking piece 3 is provided at one end outside the torsion spring 2, and a torsion spring fixing seat 4 is provided at the other end; the torsion spring 2, the unlocking piece 3 and the torsion spring fixing seat 4 form a locking mechanism; the locking mechanism moves longitudinally along the shaft core 1 to form a locking relationship with the shaft core 1.

[0035] The unlocking piece 3 is an axially through-tube structure, wherein the unlocking piece 3 is further provided with a connecting piece 301 outwardly.

[0036] The unlocking piece 3 is provided with a guide groove 302 along its length direction, wherein the connecting piece 301 extends outwards, a flexible shaft connecting point 303 is provided on the connecting piece 301 , and a torsion spring limiting notch 304 is provided at the root of the connecting piece 3 .

[0037] The torsion spring fixing seat 4 is provided with a torsion spring clamping groove 401 along its axial direction.

[0038] A slope or inclined surface transition 402 is also provided on the inner axial diameter surface of the torsion spring fixing seat 4 .

[0039] Corresponding to the torsion spring fixing seat 4, a boss 305 is provided on the inner axial surface of the unlocking piece 3, wherein the boss 305 is a trapezoidal structure.

[0040] The two ends of the unlocking piece 3 are symmetrically provided with a torsion spring 2 and a torsion spring fixing seat 4 .

Claims

1. A lock core for a lifter, comprising a shaft core (1), the shaft core (1) comprising a connecting end (101) and a locking end (102), characterized in that: A torsion spring (2) is sleeved in an interference fit on the outer diameter of the shaft core (1), wherein an unlocking piece (3) is provided at one end outside the torsion spring (2), and a torsion spring fixing seat (4) is provided at the other end; the torsion spring (2), the unlocking piece (3) and the torsion spring fixing seat (4) form a locking mechanism; the locking mechanism moves longitudinally along the shaft core (1) to form a locking relationship with the shaft core (1).

2. A lock core for a lifter according to claim 1, characterized in that: The unlocking piece (3) is an axially through-type cylindrical structure, wherein the unlocking piece (3) is further provided with a connecting piece (301) facing outwards.

3. A lock core for a lifter according to claim 1 or 2, characterized in that: The unlocking piece (3) is provided with a guide groove (302) along its length direction, wherein the connecting piece (301) extends outwards, a flexible shaft connecting point (303) is provided on the connecting piece (301), and a torsion spring limiting notch (304) is provided at the root of the connecting piece (301).

4. A lock core for a lifter according to claim 1, characterized in that: The torsion spring fixing seat (4) is provided with a torsion spring clamping groove (401) along its axial direction.

5. A lock core for a lifter according to claim 1 or 4, characterized in that: A slope or inclined surface transition (402) is also provided on the inner axial diameter surface of the torsion spring fixing seat (4).

6. A lock core for a lifter according to claim 5, characterized in that: A boss (305) is provided on the inner axial diameter surface of the unlocking piece (3) corresponding to the torsion spring fixing seat (4), wherein the boss (305) is a trapezoidal structure.

7. A lock core for a lifter according to claim 5, characterized in that: Torsion springs (2) and torsion spring fixing seats (4) are symmetrically provided at both ends of the unlocking piece (3).

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