Spring bolt anti-retreating mechanism and actuator

Abstract

The utility model discloses a lock tongue anti-retreating mechanism and an actuator, and relates to the technical field of automobiles, the lock tongue anti-retreating mechanism comprises a box cover, an elastic piece, a limiting piece and a lock tongue, the elastic piece, the limiting piece and the lock tongue are sequentially arranged along the same straight line, the lock tongue and the box cover are provided with guide structures matched with each other, so that when the lock tongue is pressed, the lock tongue can rotate relative to the box cover; the spring bolt is elastically connected to the box cover through the elastic piece. The limiting piece and the elastic piece cannot rotate relative to each other, and the limiting piece and the box cover are provided with matched positioning structures, so that when the limiting piece makes contact with the box cover, the limiting piece cannot rotate. The problem that in the prior art, a spring bolt is not smooth in action is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of actuators, in particular to a lock tongue anti-retraction mechanism and an actuator. Background Art

[0002] Fuel vehicles or new energy vehicles are equipped with doors that cover the fuel inlet or charging port. Traditional cable-type doors must be opened by a handle in the cab. With the rise of self-service gas stations and the advent of the wave of automotive intelligence, in order to meet the needs of car users for smarter door opening and closing operations, traditional energy door opening cables are being replaced by new door actuators.

[0003] Most of the door cover actuators currently used in the market are of the PUSH-PUSH type. This type of actuator can be unlocked and locked in conjunction with the car door. After unlocking, the door cover can be pressed outside the car to open the energy cover. When laying out the car body, the smaller the size of the actuator, the easier it is to match, especially in cars where new energy fast and slow charging are arranged together. Therefore, the actuator is required to be smaller in size and have fewer parts. For this reason, the prior art proposes an actuator that allows the lock tongue to rotate continuously in one direction, but in actual use, it is found that the actuator often has the problem of the lock tongue rotating unsmoothly. Utility Model Content

[0004] In view of the deficiencies in the prior art, the first object of the utility model is to provide a lock tongue anti-retraction mechanism to make the lock tongue rotate more smoothly.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A lock tongue anti-retraction mechanism comprises: a box cover and an elastic member, a limit member and a lock tongue arranged in sequence along the same straight line, the lock tongue and the box cover are provided with matching guide structures so that when the lock tongue is pressed, the lock tongue can rotate relative to the box cover; the lock tongue is elastically connected to the box cover through the elastic member; the limit member and the elastic member are arranged to be non-rotatable relative to each other, and the limit member and the box cover are provided with matching positioning structures so that when the limit member contacts the box cover, the limit member cannot rotate.

[0007] Compared with the prior art, the utility model has the following beneficial effects:

[0008] When the lock tongue is pressed, the elastic part is compressed, and when the lock tongue contacts the box cover, the lock tongue rotates relative to the box cover; at the same time, the limit member contacts the box cover, causing the limit member to be unable to rotate, and because the limit member and the elastic member are set to be unable to rotate relative to each other, the elastic member will not rotate at this time, thereby avoiding the rotation of the lock tongue and causing the elastic member to generate torsion and stress; when the lock tongue is pressed again, the lock tongue is pushed open by the elastic member, the limit member and the box cover are disengaged, and the elastic member is reset, thereby avoiding the elastic member from reversing due to the superposition of stress and then driving the lock tongue to reverse, and the lock tongue rotates more smoothly, thereby making locking and unlocking more reliable.

[0009] Furthermore, the box cover also includes a positioning shaft, the elastic member includes a spring and is sleeved outside the positioning shaft, and the limiting member is interference fit with the inner ring of the spring.

[0010] Furthermore, the limiting member includes a fixed head and a rod, the rod is interference fit with the inner ring of the spring, and the diameter of the head is larger than the inner diameter of the spring.

[0011] Furthermore, the limiting member is provided with a positioning protrusion / groove, and the box cover is provided with a groove / protrusion matching the limiting member.

[0012] Furthermore, the limiting member is provided with a cross groove, and the positioning shaft is fixedly provided with a cross protrusion.

[0013] Furthermore, the locking tongue comprises a cylindrical shell, and both the elastic member and the limiting member may be located inside the shell.

[0014] Another object of the utility model is to provide an actuator, comprising any one of the above-mentioned lock tongue anti-retraction mechanisms.

[0015] Since the actuator is provided with the lock tongue anti-retraction mechanism, it also has the advantage of smooth rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 An exploded view of an actuator in some of the embodiments;

[0017] Figure 2 for Figure 1 Schematic diagram of the structure of the box cover;

[0018] Figure 3 for Figure 1 Schematic diagram of the structure of the middle limiter.

[0019] In the above drawings:

[0020] 1. Box cover; 101. Positioning shaft; 102. Cross protrusion;

[0021] 2. Elastic parts;

[0022] 3. Limiting member; 301. Head; 302. Rod; 303. Cross groove;

[0023] 4. Lock tongue. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments; the structures described in the various embodiments can be freely combined without any conflict in structure or principle.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] The following is a description of some embodiments of the present invention in conjunction with the accompanying drawings:

[0028] like Figures 1 to 3 As shown, the utility model proposes a lock tongue anti-retraction mechanism, including a box cover 1, an elastic member 2, a limit member 3 and a lock tongue 4, wherein:

[0029] The lock tongue 4, the stopper 3 and the elastic member 2 are arranged in sequence from top to bottom along the same straight line. The lock tongue 4 and the box cover 1 are provided with a matching guide structure so that when the lock tongue 4 is pressed, the lock tongue 4 can rotate relative to the box cover 1; it should be understood that the specific setting method of the guide structure is not the invention content of the utility model, for example, it can be implemented by referring to the patent application document with the announcement number CN112096197A previously applied by our company. The lock tongue 4 is elastically connected to the box cover 1 through the elastic member 2, and the elastic member 2 plays the role of resetting the lock tongue 4; the stopper 3 and the elastic member 2 are set to be non-rotatable relative to each other, and the stopper 3 and the box cover 1 are provided with a matching positioning structure so that when the stopper 3 contacts the box cover 1, the stopper 3 cannot rotate.

[0030] By adopting the above scheme, when the lock tongue 4 is pressed, the elastic member 2 is compressed, and when the lock tongue 4 contacts the box cover 1, the lock tongue 4 rotates relative to the box cover 1; at the same time, the limiting member 3 contacts the box cover 1, causing the limiting member 3 to be unable to rotate, and because the limiting member 3 and the elastic member 2 are set to be unable to rotate relative to each other, the elastic member 2 will not rotate at this time, thereby avoiding the rotation of the lock tongue 4 causing the elastic member 2 to generate torsion and stress; the lock tongue 4 is pressed again, and the lock tongue 4 is pushed open by the elastic member 2, and the limiting member 3 and the box cover 1 are out of contact, so that the elastic member 2 is reset, thereby avoiding the elastic member 2 from reversing due to the superposition of stress and then driving the lock tongue 4 to reverse, and the lock tongue 4 rotates more smoothly, so that locking and unlocking are more reliable.

[0031] In some other embodiments, such as Figure 1 As shown, the box cover 1 also includes a positioning shaft 101. For example, the positioning shaft 101 and the box body are integrally injection molded, and the elastic member 2 includes a spring, and the spring is sleeved outside the positioning shaft 101; in addition, the limiting member 3 and the inner ring of the spring are interference-fitted to achieve that the limiting member 3 and the elastic member 2 are set to be non-rotatable relative to each other; for example, combined with Figure 3 As shown, the stopper 3 includes a fixed head 301 and a rod 302, both of which are cylindrical, and the rod 302 is inserted into the spring, and the outer ring of the rod 302 is interference fit with the inner ring of the spring, and the diameter of the head 301 is set to be larger than the inner diameter of the spring, so that the lock tongue 4 presses the stopper 3 to compress and deform the elastic member 2. In this way, the positioning shaft 101, the elastic member 2 and the stopper 3 have simple structures and are easy to assemble with each other.

[0032] Furthermore, the positioning mechanism for the stopper 3 and the box cover 1 to cooperate is a protrusion or a groove. For example, a positioning protrusion / groove is provided on the stopper 3, and correspondingly, a groove / protrusion matching the stopper 3 is provided on the box cover 1; when the protrusion is inserted into the groove, the stopper 3 cannot rotate. Figure 2 and Figure 3As shown, a cross groove 303 (i.e., a cross-shaped cross section) is provided in the middle of the stopper 3, and the cross groove 303 can penetrate along the axial direction of the stopper 3, and a cross protrusion 102 is fixed on the top of the positioning shaft 101; the locking tongue 4 presses the stopper 3 to move downward until the cross protrusion 102 is inserted into the cross groove 303, at which time the stopper 3 and the elastic member 2 cannot rotate; this positioning structure is firmly positioned. It should be understood that the cross section of the protrusion can also be other shapes, such as rectangular, prismatic, or fan-shaped.

[0033] Furthermore, the locking tongue 4 comprises a cylindrical shell with an open bottom. The elastic member 2 and the limiting member 3 can be located inside the shell and the three are coaxially arranged. The upper end of the limiting member 3 contacts the inner top wall of the shell. The structure is compact.

[0034] The working process of the anti-retraction mechanism of the lock tongue 4 is as follows:

[0035] The external force presses the lock tongue 4, and the lock tongue 4 presses the limit piece 3, thereby causing the elastic piece 2 to produce a compression deformation until the cross groove 303 of the limit piece 3 is sleeved outside the cross protrusion 102 on the positioning shaft 101. At this time, the limit piece 3 and the elastic piece 2 are both unable to rotate; after pressing the lock tongue 4 again, the lock tongue 4 is pushed open by the elastic piece 2, and the cross groove 303 moves upward until it is separated from the cross protrusion 102. At this time, the elastic piece 2 releases the stress (the stress is the torque that the elastic piece 2 may generate when the cross groove 303 has not yet contacted the cross protrusion 102) and resets, preventing the elastic piece 2 from flipping over due to the superposition of stress, thereby driving the lock tongue 4 to reverse.

[0036] The utility model also provides an actuator, comprising any one of the above-mentioned locking tongue anti-retraction mechanisms.

[0037] Since the anti-retraction mechanism of the lock tongue 4 is provided, the lock tongue 4 also has the advantage of smooth rotation.

Claims

1. A lock tongue anti-retraction mechanism, characterized in that: include: A box cover (1) and an elastic member (2), a limiting member (3) and a locking tongue (4) are sequentially arranged along the same straight line; the locking tongue (4) and the box cover (1) are provided with matching guiding structures so that when the locking tongue (4) is pressed, the locking tongue (4) can rotate relative to the box cover (1); the locking tongue (4) is elastically connected to the box cover (1) through the elastic member (2); the limiting member (3) and the elastic member (2) are arranged so as not to rotate relative to each other; the limiting member (3) and the box cover (1) are provided with matching positioning structures so that when the limiting member (3) contacts the box cover (1), the limiting member (3) cannot rotate.

2. A lock tongue anti-retraction mechanism according to claim 1, characterized in that: The box cover (1) further comprises a positioning shaft (101), the elastic member (2) comprises a spring and is sleeved outside the positioning shaft (101), and the limiting member (3) is interference-fitted with the inner ring of the spring.

3. A lock tongue anti-retraction mechanism according to claim 2, characterized in that: The limiting member (3) comprises a fixed head (301) and a rod (302); the rod (302) is interference fit with the inner ring of the spring; and the diameter of the head (301) is greater than the inner diameter of the spring.

4. A lock tongue anti-retraction mechanism according to claim 2 or 3, characterized in that: The limiting member (3) is provided with a positioning protrusion / groove, and the box cover (1) is provided with a groove / protrusion matching the limiting member (3).

5. A lock tongue anti-retraction mechanism according to claim 2 or 3, characterized in that: The limiting member (3) is provided with a cross groove (303), and the positioning shaft (101) is fixedly provided with a cross protrusion (102).

6. A lock tongue anti-retraction mechanism according to any one of claims 1 to 3, characterized in that: The locking tongue (4) comprises a cylindrical shell, and the elastic member (2) and the limiting member (3) can both be located inside the shell.

7. An actuator, characterized in that: It comprises the lock tongue anti-retraction mechanism as described in any one of claims 1 to 3.

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