CN205028164U - Limiting mechanism - Google Patents

Abstract

A position limiting mechanism of the present utility model comprises a fixed part, a moving part movably installed on the fixed part, and an elastic limit assembly, wherein the elastic limit assembly includes an elastic limit structure and a matching limit structure, both They are respectively arranged on the fixed part and the moving part, and when the moving part moves to the joint position where the elastic limit structure and the matching limit structure are combined, the elastic limit structure is combined with the matching limit structure under the action of its own elasticity Limiting; when the moving part is forced to disengage the elastic limiting structure from the matching limiting structure under the action of an external force sufficient to overcome the elastic force of the elastic limiting structure itself, the limiting of the moving part is released. The limit mechanism of the utility model can not only be used for the limit position of the movement mechanism and the limit of different gears, but also can significantly improve the hand feeling and hearing feeling when the movement mechanism moves to the limit position, and improve the quality limit of the product. structure.

Description

a limit mechanism

technical field

The utility model relates to the field of position-limiting mechanisms, in particular to a position-limiting mechanism for limiting the limit positions of a motion mechanism and different gear positions.

Background technique

The limit position limiting mechanism of the existing kinematic mechanism usually includes a fixed part, a moving part that can move on the fixed part, and a limit assembly that is arranged between the fixed part and the movable part to limit the moving part. The limit mechanism of the fixed part is to set a limit stopper or a limit column at the limit position of the moving part on the fixed part. Therefore, there is usually a "clang" impact sound, which not only produces a large noise, but also has a bad operating feel, which is easy to reduce the quality of the product where the limit mechanism is installed; more importantly, because it is a limit mechanism Therefore, after the moving part reaches the limit position, it cannot continue to move forward beyond the limit stopper or limit column. Therefore, the limiting mechanism of the prior art can only limit the limit position, and does not It can realize multi-gear limit, and the application range is narrow.

Utility model content

Therefore, the technical problem to be solved by the utility model is to overcome the unreasonable structure of the limiting mechanism in the prior art, which is easy to cause impact sound when limiting the movement mechanism, and the operation feels rough, which is easy to reduce the defect of product quality, thereby providing a This kind of limit structure can not only be used to limit the limit position of the movement mechanism and the limit of different gears, but also can significantly improve the feel and hearing of the movement mechanism when it moves to the limit position, and improve the quality of the product.

In order to solve the above technical problems, a position limiting mechanism of the present invention comprises:

Fastener;

a moving part, movably mounted on the fixed part;

The elastic limit assembly includes an elastic limit structure and a matching limit structure, which are respectively arranged on the fixed part and the moving part, and when the moving part moves to the elastic limit structure and the matching When the limit structure is combined with the combined position, the elastic limit structure is combined with the matching limit structure under the action of its own elastic force to limit the moving part; when the moving part is sufficient to overcome the elastic limit When the elastic limiting structure is forced to disengage from the matching limiting structure under the action of the external force of the elastic force of the positioning structure itself, the limiting of the moving part is released.

In the limiting mechanism of the present utility model, the elastic limiting structure includes a mounting hole formed on the moving part or the fixing part, a thimble disposed in the mounting hole, and a thimble disposed in the mounting hole. The biasing member between the thimble and the thimble, the force of the biasing member acts on the thimble, and there is a tendency for the thimble to protrude from the installation hole; The fixing part or the limiting hole on the moving part, and the shape of the head of the thimble satisfies: the head of the thimble is suitable for inserting into the limiting hole, and when the moving part is subjected to sufficient force to overcome the Under the action of the external force of the elastic force of the biasing member, the head of the thimble is suitable to escape from the limiting hole.

In the limiting mechanism of the present invention, the biasing member is a spring with one end connected to the bottom of the installation hole and the other end connected to the thimble.

In the limiting mechanism of the present utility model, the head of the thimble is shaped as a hemisphere.

In the limiting mechanism of the present utility model, the fixed part is an annular seat, the moving part is an annular part, and an annular sinker is formed on one end surface of the annular seat, and the annular sinker is suitable for the The ring part is inserted and rotated therein, the bottom of the annular sinker is provided with the elastic limit structure or the matching stop structure, and the end face of the ring part suitable for being inserted into the ring slot is provided with a There is the said cooperation limiting structure or the said elastic limiting structure.

In the limiting mechanism of the present utility model, an annular sinking chute is provided on the end surface of the moving part inserted into the sinking groove, and the limiting hole is formed at the bottom of the chute.

In the position-limiting mechanism of the present invention, there are multiple cooperating position-limiting structures evenly distributed on the moving part or the fixed part, and one elastic position-limiting structure is provided.

The technical scheme of the utility model has the following advantages:

1. In the position-limiting mechanism of the present utility model, since the elastic position-limiting structure arranged between the moving part and the fixed part relies on its own elastic force to realize the combination with the matching position-limiting structure, it also relies on external force to overcome the elastic position-limiting structure itself Therefore, not only the operation feels good, but also the sound is pleasant when reaching the limit position, and there is a reminder function. More importantly, after the elastic limit structure and the match limit structure are separated and combined, it can The limit of the moving part is released, so that the moving part can bypass the combined position and continue to move forward.

2. In the present utility model, a plurality of matching limit structures can be provided, and one elastic limit structure is preferably provided, so that multiple positions can be limited during the movement of the moving parts, thereby realizing multi-position limit.

3. In this utility model, the head of the thimble is shaped into a hemispherical shape, which not only ensures that when the thimble enters the limit hole, it has a clear feel and a pleasant sound, but also facilitates the ejection of the thimble from the limit hole when it is stressed. .

4. The position-limiting mechanism of the present invention is not limited to the position-limiting of moving parts that rotate, but can also be used for position-limiting on moving parts such as parallel sliding and curved motion, and is widely used.

Description of drawings

In order to more clearly illustrate the specific implementation of the utility model or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the specific implementation or the prior art will be briefly introduced below. Obviously, the following descriptions The accompanying drawings are some implementations of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative work.

Fig. 1 is the exploded view of the position-limiting mechanism of the present utility model;

Fig. 2 is the front view of the position-limiting mechanism of the present utility model;

Fig. 3 is the perspective view of the fixing part of the present utility model;

Fig. 4 is the top view of the moving part of the present utility model;

Explanation of reference signs:

1-fixed parts; 2-moving parts; 3-installation holes;

4-limit hole; 5-spring; 6-annular sinking groove;

7-chute; 8-thimble.

detailed description

The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not constitute conflicts with each other.

Example 1

As shown in Figures 1 and 2, a position limiting mechanism of the present invention includes a fixed part 1, a moving part 2 movably installed on the fixed part 1, and an elastic limit assembly, wherein the elastic limit assembly includes an elastic The limiting structure and the matching limiting structure are respectively arranged on the fixed part 1 and the moving part 2, and when the moving part 2 moves to the combined position where the elastic limiting structure and the matching limiting structure are combined, the elastic limiting structure is Under the action of its own elastic force, it is combined with the matching limiting structure to limit the moving part 2; when the moving part 2 is forced to disengage the elastic limiting structure from the matching limiting structure under the action of an external force sufficient to overcome the elastic force of the elastic limiting structure , release the limit to the moving part 2.

The above-mentioned solution is the core solution of the present utility model, because the elastic limit structure arranged between the fixed part 1 and the moving part 2 relies on its own elastic force to realize the combination with the matching limit structure, and also relies on external force to overcome the elastic limit structure Its own elastic force is used to break away from the combination with the matching limit structure. Therefore, not only the operation feels good, but also the sound is pleasant when reaching the limit position, and it has a reminder function. More importantly, after the elastic limit structure and the match limit structure are separated from the combination The limit of the moving part 2 can be released, so that the moving part 2 can bypass the joint position and continue to move forward.

There are many kinds of elastic limit structures and structures that cooperate with the limit structures. In this embodiment, the elastic limit structure preferably includes a mounting hole 3 formed on the fixing part 1, and a thimble 8 disposed in the mounting hole 3. , and the biasing member arranged between the mounting hole 3 and the thimble 8, the force of the biasing member acts on the thimble 8, and there is a tendency to make the thimble 8 protrude from the mounting hole 3; the matching limit structure includes molding on the moving part 2, and the shape of the head of the thimble 8 satisfies: the head of the thimble 8 is suitable for inserting into the limiting hole 4, and when the moving part 2 is subjected to sufficient force to overcome the deflection Under the action of the external force of the elastic force of the pressing piece, the head of the thimble 8 is suitable to escape from the limiting hole 4 . The above-mentioned structure is very simple, the manufacturing cost is low, and when the limit position is reached, the limit sound is small. Certainly, in other embodiments, the installation hole 3 , the thimble, and the biasing member may also be provided on the movable member 2 , and the limiting hole 4 may be provided on the fixed member 1 . Further, preferably, the biasing member is a spring 5 with one end connected to the bottom of the mounting hole 3 and the other end connected to the thimble 8 .

Further, the head of the thimble 8 is preferably formed into a hemispherical shape, which not only ensures that when the thimble enters the limiting hole 4, the feel is clear and the sound is pleasant, but also the thimble 8 can be easily released from the limiting hole 4 when it is stressed. . However, in actual design, the cooperation of the hemispherical head of the thimble 8 with the limiting hole 4 and the spring needs to be strictly verified.

As shown in Figures 3 and 4, in this embodiment, preferably the fixed part 1 is an annular seat, the moving part 2 is an annular part, and an annular sinker 6 is formed on one end surface of the annular seat, and the annular sinker 6 is suitable for a ring Parts are inserted and rotated therein, the groove bottom of the annular sinker 6 is provided with an elastic limit structure or a matching limit structure, and the end face of the ring part suitable for inserting into the annular slot is provided with a match limit structure or an elastic limit structure . The arrangement of the annular sinking groove 6 can ensure that the moving part 2 rotates on the fixed part 1 smoothly and stably according to the rotation track. Of course, the limiting mechanism of the present invention is not limited to the limit of the moving part 2 that rotates, and can also be applied to The limit on the moving part 2, such as parallel sliding and curved movement, is widely used, because in the limit of these types of motion, the structure of the elastic limit component is the same, only the structure of the moving part 2 and the fixed part 1 Different, therefore, no more description.

Further, an annular sinking chute 7 is provided on the end face of the moving part 2 inserted into the sinking trough, and the limiting hole 4 is formed at the bottom of the chute 7 . The setting of the chute 7 can guide the thimble 8 so that the thimble 8 moves more smoothly with the moving part 2 .

There are multiple cooperating limit structures, which are evenly distributed on the moving part 2 , and one elastic limit structure is provided, which is arranged on the fixed part 1 . Of course, it is also possible that a plurality of cooperating limiting structures are evenly distributed on the fixing part 1 , and one elastic limiting structure is arranged on the moving part 2 . In this way, during the movement of the moving part 2, multiple positions can be limited, thereby realizing multi-gear position limits. The number of cooperating limiting structures can be set as required, as shown in Figure 1, there are four cooperating limiting structures (ie, limiting holes 4), and one elastic limiting structure.

The working process of the position-limiting mechanism of the present utility model:

Now take the rotating movement of moving part 2 relative to fixed part 1 as an example to introduce:

When the moving part 2 is rotated, when the moving part 2 moves to the thimble 8 on the fixed part 1 and one of the limiting holes 4 on the moving part 2 is aligned, under the action of the compressed spring 5, the thimble 8 pops out of the mounting hole 3, Inserted into the limit hole 4, so as to limit the moving part 2.

When the limit needs to be released, the moving part 2 is rotated hard, and the thimble 8 is pushed back into the installation hole 3 by the moving part 2, so that the spring 5 shrinks until the thimble 8 completely withdraws from the limit hole 4 of the moving part 2. Time moving part 2 promptly can rotate.

When the thimble 8 moves relatively along the chute 7 to the next limit hole 4, the thimble 8 will slide into the limit hole 4 again under the action of the spring force to play the role of limit, and at the same time it will make a crisp sound and feel clear.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the scope of protection of the utility model.

Claims (7)

1. A limit mechanism, comprising: Fixing piece (1); The moving part (2) is movably mounted on the fixed part (1); It is characterized in that, It also includes an elastic limit assembly, the elastic limit assembly includes an elastic limit structure and a cooperative limit structure, both of which are respectively arranged on the fixed part (1) and the moving part (2), and when the When the moving part (2) moves to the combined position where the elastic limiting structure is combined with the matching limiting structure, the elastic limiting structure is combined with the matching limiting structure under the action of its own elastic force to correct the movement. When the moving part (2) forces the elastic limiting structure to disengage from the matching limiting structure under the action of an external force sufficient to overcome the elastic force of the elastic limiting structure itself, Release the limit on the moving part (2). 2. The limiting mechanism according to claim 1, characterized in that, the elastic limiting structure includes a mounting hole (3) formed on the moving part (2) or the fixing part (1), and the The thimble (8) in the mounting hole (3), and the biasing member arranged between the mounting hole (3) and the thimble (8), the force of the biasing member acts on the On the thimble (8), there is a tendency for the thimble (8) to protrude from the installation hole (3); ), and the shape of the head of the thimble (8) satisfies: the head of the thimble (8) is suitable for inserting into the limiting hole (4), and in the movement When the member (2) is under the action of an external force sufficient to overcome the elastic force of the biasing member, the head of the thimble (8) is adapted to escape from the limiting hole (4). 3. The position limiting mechanism according to claim 2, characterized in that the biasing member is a spring (5) with one end connected to the bottom of the mounting hole (3) and the other end connected to the thimble (8). 4. The limiting mechanism according to claim 2, characterized in that, the head of the thimble (8) is shaped as a hemisphere. 5. The position-limiting mechanism according to any one of claims 1-4, characterized in that, the fixed member (1) is an annular seat, the moving member (2) is an annular member, and the annular seat An annular sinking groove (6) is formed on one end surface of the body, and the annular sinking groove (6) is suitable for inserting and rotating the ring piece, and the bottom of the annular sinking groove (6) is provided with the elastic limiter. The position structure or the matching position-limiting structure, and the end face of the one end of the annular member suitable for being inserted into the annular slot is provided with the co-operating position-limiting structure or the elastic position-limiting structure. 6. The position-limiting mechanism according to claim 5, characterized in that, an annular chute (7) is provided on the end surface of one end of the moving part (2) inserted into the annular sinker, and the position-limiting hole ( 4) Formed on the bottom of the chute (7). 7. The position-limiting mechanism according to any one of claims 1-4, characterized in that there are multiple cooperating position-limiting structures, which are evenly distributed on the moving part (2) or the fixed part ( 1) above, the elastic limit structure is provided with one.