A lock knob

Abstract

The utility model relates to the technical field of lock knob, especially relates to a lock knob, including knob main part and locking slide, the knob main part is equipped with the stop pin through the elastic expansion piece bottom end, the locking slide is located on the lock main part, the both ends of locking slide are connected with locking position and unlocking position respectively, and the elastic expansion piece is drawn and rotates knob main part and makes the stop pin along the locking slide and slides between locking position and unlocking position, the utility model discloses the knob can resist the impact, and the anti -crash sex is improved significantly, and the pre -tightening force attenuation problem of vibration scene is solved completely.

Description

Technical Field

[0001] This utility model relates to the field of locking knob technology, and in particular to a locking knob. Background Technology

[0002] In the fields of automation equipment, machinery manufacturing, and industrial equipment, locking knobs are a widely used key functional component. They are mainly used when equipment or production lines are changed (i.e., when the manufactured products change), enabling quick replacement of tooling fixtures and achieving effective locking. Their core function is to reliably lock and quickly release tooling fixtures, functional modules, and other components, making them indispensable, especially in scenarios requiring rapid production line switching.

[0003] Traditional locking devices are based on a mechanical self-locking structure using a central shaft and cam sleeve. The core feature of this structure is that the central shaft has a specially shaped cam groove, which, together with an embedded steel ball, forms an interlocking unit. When the knob is subjected to axial pulling or rotation, the central shaft shifts or changes angle, driving the steel ball to move along the cam surface and fall into the locking groove at a specific position, achieving mechanical interlocking and thus locking. Reverse operation releases the steel ball by disengaging it from the groove. Traditional locking devices are highly susceptible to loosening or even complete failure under vibration or impact. This not only directly leads to loss of positioning accuracy in precision equipment but also poses significant safety hazards. The problem extends beyond accuracy loss. Locking failure can cause equipment displacement, operational interference, or electrical short circuits, resulting in permanent damage to core components and production interruptions. More seriously, these short circuits have become ignition sources, causing several fires and posing a severe threat to personnel safety, production assets, and factory operations.

[0004] Therefore, traditional knobs are not reliable enough in dynamic environments, making it particularly urgent to develop a self-locking mechanism that is shock-resistant and prevents loosening. Utility Model Content

[0005] This invention solves the problem of knobs easily loosening upon impact in related technologies, proposing a locking knob. The core advantage of this knob in terms of impact resistance lies in its unique mechanical self-locking principle and force path conversion. Traditional knobs rely on point contact between a steel ball and a sloping groove; the impact force directly generates a component force that causes unlocking. This invention, however, achieves stable surface contact by embedding a stop pin into a recessed locking position. When a lateral impact attempts to turn the knob, this force is blocked by the side wall of the locking position and converted into a force that must overcome spring pressure to lift the stop pin vertically upwards. Under a sudden, massive impact, this vertical displacement is extremely difficult to occur, thus firmly "locking" the stop pin within the locking position, effectively resisting displacement and significantly improving impact resistance, completely solving the problem of preload attenuation in vibration scenarios.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a locking knob, including a knob body and a locking slide, wherein a stop pin is installed on the knob body through an elastic telescopic member, the locking slide is located on the locking body, and the two ends of the locking slide are respectively connected to the locking position and the unlocking position. Pulling the elastic telescopic member and rotating the knob body causes the stop pin to slide along the locking slide between the locking position and the unlocking position.

[0007] As a preferred embodiment, the elastic telescopic component includes a spring, a button, and a button lever, with one end of the button lever connected to the button and the other end connected to a stop pin. The spring is fitted onto the button lever and rests on the stop pin.

[0008] As a preferred embodiment, the stop pin is cylindrical and fixedly installed at the other end of the button lever.

[0009] As a preferred embodiment, the ring surface connecting the button and the button lever is provided with a status indicator. When locked, the status indicator is located inside the knob body, and when unlocked, the status indicator is exposed outside the knob body.

[0010] As a preferred embodiment, the locking slide is an arc-shaped slide.

[0011] As a preferred embodiment, both the locking position and the unlocking position are arc-shaped structures, with the locking position recessed relative to the locking slide and the unlocking position flush with the locking slide.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the knob of this utility model can withstand impact and its impact resistance is significantly improved, completely solving the problem of preload attenuation in vibration scenarios; through the status recognition unit, reliable and easily perceptible status feedback is provided for the locking operation, and the "lock / unlock" status is clearly displayed through clear visual indicators (such as color display or change), reducing the error rate and effectively improving safety. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model (locked state); Figure 2 This is a schematic diagram of the overall structure of this utility model (unlocked state); Figure 3 This is a schematic diagram of the elastic telescopic component of this utility model; Figure 4 This is a schematic diagram of the locking slide of this utility model.

[0014] In the picture: 1. Knob body; 2. Locking slide; 3. Elastic telescopic component; 301. Spring; 302. Button; 303. Button lever; 4. Stop pin; 5. Locking position; 6. Unlocking position; 7. Locking device body; 8. Status indicator. Detailed Implementation

[0015] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0016] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0017] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0018] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0019] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0020] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0021] like Figures 1 to 4 As shown, a locking knob includes a knob body 1 and a locking slide 2. A stop pin 4 is connected to the knob body 1 via an elastic telescopic member 3. The locking slide 2 is an arc-shaped slide opened at the top of the locking knob body 7. The two ends of the locking slide 2 are respectively connected to the locking position 5 and the unlocking position 6. Pulling the elastic telescopic member 3 and rotating the knob body 1 causes the stop pin 4 to slide along the locking slide 2 between the locking position 5 and the unlocking position 6.

[0022] In one embodiment, the elastic telescopic member 3 includes a spring 301, a button 302, and a button rod 303. One end of the button rod 303 is connected to a stop pin 4, and the other end is connected to the button 302. The bottom end of the button 302 is connected to the button rod 303. The spring 301 is sleeved on the button rod 303 and placed on the stop pin 4.

[0023] In one embodiment, the stop pin 4 is cylindrical and fixedly installed at the other end of the button lever 303. Pulling the button 302 causes the button lever 303 to extend the stop pin 4, so that the stop pin 4 can move along the locking slide 2.

[0024] In one embodiment, in order to fit the cylindrical stop pin 4, the locking position 5 is an arc-shaped structure, and the locking position 5 is recessed relative to the locking slide 2 for locking, and the unlocking position 6 is flush with the locking slide 2.

[0025] In one embodiment, a status indicator 8 is provided on the annular surface of the button lever 303 connected to the button 302. When locked, the status indicator 8 is located inside the knob body 1. When unlocked, the status indicator 8 is exposed on the knob body 1. The status indicator 8 can be a colored dot, square, rectangle, etc. The content shown on the status indicator 8 can be a bright color such as red or orange, or a pattern containing warning signs.

[0026] The working principle is as follows: Figure 1 As shown, pulling button 302 causes the stop pin 4 to pop out (at this time, the colored status indicator 8 is exposed on the knob body 1). Then, rotating the knob body 1 counterclockwise causes the stop pin 4 to rotate to the unlock position 6, thus unlocking the knob. Figure 2 As shown, when returning from the unlocked position 6 to the locked position 5, the knob body 1 is rotated clockwise, causing the stop pin 4 to rotate to the locked position 5. At this time, under the action of the spring 301, the button rod 303 drives the stop pin 4 to retract. At this time, the colored status indicator 8 is located inside the knob body 1.

[0027] This invention achieves surface contact by embedding the stop pin 4 into the recessed locking position 5. Lateral impact force is blocked by the side wall of the locking position 5, and converted into a vertical force that must overcome the pressure of the spring 301 to lift the stop pin 4 upwards. Under instantaneous impact, this vertical displacement is extremely difficult to occur, thus ensuring the stop pin 4 is securely locked.

[0028] In addition, a side impact resistance test was conducted on the knob of this utility model and a traditional knob. The traditional knob loosened after a 50J impact, while the knob of this utility model remained undisplaced after a 150J impact. This indicates that the button of this utility model can withstand impact and has significantly improved impact resistance, completely solving the problem of preload attenuation in vibration scenarios.

[0029] The above are preferred embodiments of this utility model. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on this utility model shall fall within the protection scope of this utility model.

Claims

1. A locking knob, characterized in that: The device includes a knob body (1) and a locking slide (2). A stop pin (4) is installed on the bottom of the knob body (1) via an elastic telescopic member (3). The locking slide (2) is located on the locking body (7). The two ends of the locking slide (2) are connected to the locking position (5) and the unlocking position (6) respectively. Pulling the elastic telescopic member (3) and rotating the knob body (1) causes the stop pin (4) to slide along the locking slide (2) between the locking position (5) and the unlocking position (6).

2. The locking knob according to claim 1, characterized in that: The elastic telescopic component (3) includes a spring (301), a button (302) and a button rod (303). One end of the button rod (303) is connected to a stop pin (4), and the other end is connected to the button (302). The bottom end of the button (302) is connected to the button rod (303), and the spring (301) is sleeved on the button rod (303) and placed on the stop pin (4).

3. The locking knob according to claim 2, characterized in that: The stop pin (4) is cylindrical and is fixedly installed at the other end of the button rod (303).

4. The locking knob according to claim 2, characterized in that: The button (302) is connected to the button lever (303) with a status indicator (8) on the annular surface. When locked, the status indicator (8) is located inside the knob body (1). When unlocked, the status indicator (8) is exposed outside the knob body (1).

5. The locking knob according to claim 1, characterized in that: The locking slide (2) is an arc-shaped slide.

6. The locking knob according to claim 1, characterized in that: Both the locking position (5) and the unlocking position (6) are arc-shaped structures. The locking position (5) is recessed relative to the locking slide (2), and the unlocking position (6) is flush with the locking slide (2).

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