CN217089912U

CN217089912U - Self-locking mechanism and hand-operated lifting table

Info

Publication number: CN217089912U
Application number: CN202123253231.8U
Authority: CN
Inventors: 黄立先; 刘涛; 朱更兴
Original assignee: Changzhou Kaidi Electrical Co Ltd
Current assignee: Changzhou Kaidi Electrical Co Ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-08-02
Anticipated expiration: 2031-12-22

Abstract

The utility model relates to a self-locking mechanism and hand lift table, a self-locking mechanism, including rocking handle, transfer line, self-lock device includes first latch segment, second latch segment and is located spacing gyro wheel between the two, the transfer line is connected and then realizes the synchronous rotation of transfer line, spacing gyro wheel and rocking handle with the rocking handle cooperation after passing first latch segment, spacing gyro wheel, second latch segment in proper order, the stopper is installed to the side of spacing gyro wheel, the stopper can be gone into or break away from spacing gyro wheel, the stopper card is gone into spacing gyro wheel is in order to restrict the circular motion of spacing gyro wheel. A hand-operated lifting table comprises the self-locking mechanism. The utility model discloses a self-locking mechanism simple structure, processing facility, low in manufacturing cost are honest and clean, have compatible operational safety and convenience. When the table is operated by a user, the rocking handle is pulled out after the table is lifted to the use height, so that the rocking handle is separated from the self-locking device to realize self-locking, and the stability of the lifting table is ensured.

Description

Self-locking mechanism and hand-operated lifting table

Technical Field

The utility model belongs to the technical field of lift table technique and specifically relates to a self-locking mechanism and hand lift table.

Background

Along with the continuous improvement of living standard of people, the demand on the lifting table is also getting bigger and bigger. This wherein, the hand lift table of simple structure and price/performance ratio then has obtained more people's favor. However, the hand-operated lifting table only changes the rotation of the rocking handle into the lifting movement of the table top through the gear box and has no function of automatic locking after the lifting is finished. This results in a limited load bearing capacity of the table top, which does not allow the placement of heavy objects, which otherwise could easily cause the table top to slide down.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: overcomes the defects of the prior art and provides a self-locking mechanism and a hand-operated lifting table.

The utility model provides a technical scheme that its technical problem adopted is:

on the one hand, a self-locking mechanism, includes rocking handle, transfer line, self-lock device includes first latch segment, second latch segment and is located spacing gyro wheel between the two, the transfer line passes in proper order behind first latch segment, spacing gyro wheel, the second latch segment and is connected and then realize the synchronous rotation of transfer line, spacing gyro wheel and rocking handle with the rocking handle cooperation, the stopper is installed to the side of spacing gyro wheel, the stopper can be gone into or break away from spacing gyro wheel, the stopper card is gone into spacing gyro wheel is in order to restrict the circular motion of spacing gyro wheel.

Preferably, the limiting roller is arranged in an installation cavity formed by the first locking block and the second locking block, the limiting block is arranged in a notch formed by the first locking block and the second locking block, the limiting block is positioned in a notch on one side of the limiting roller, and the limiting block can slide in the notch.

Preferably, the side wall of the limiting block is provided with a side wall hole, and an elastic part is arranged between the side wall hole and the side wall of the notch.

Preferably, the side wall of the limiting block facing the limiting roller is provided with a convex hull, the circumferential surface of the limiting roller is provided with a plurality of roller tooth grooves for the convex hull to be clamped in or separated from, and the roller tooth grooves are formed between adjacent roller teeth.

Preferably, the front wall of the limiting block is provided with a bent clamping strip, and the end face of the clamping strip facing the transmission rod is provided with an inclined plane, so that the limiting block is separated from the limiting roller when the rocking handle is inserted towards the inner end of the inclined plane, and the limiting block is clamped into the limiting roller when the rocking handle is pulled out towards the outer end of the inclined plane.

Preferably, the side of spacing gyro wheel installs the stopper of two symmetry settings, and the card strip of two stoppers forms the trapezoidal space that can be convenient for rocking handle male big-end-up relatively.

Preferably, the shaft end face of the transmission rod is polygonal, and the limiting idler wheel is provided with a polygonal hole matched with the shaft end face of the transmission rod.

Preferably, the shaft necks of the front side and the rear side of the limiting roller are respectively matched and installed with the second locking center hole of the second locking block and the first locking center hole of the first locking block, an accommodating groove capable of enabling the clamping strip to move is formed in one side, facing the rocking handle, of the second locking block, and the first locking block is connected with the second locking block through a fastener.

On the other hand, the hand-operated lifting table comprises the self-locking mechanism.

Preferably, the hand-operated lifting table comprises a table board and a table top support positioned below the table board. The self-locking device can be arranged on the desktop bracket. The desktop support is used for limiting the axial movement of the self-locking device.

The invention has the beneficial effects that: the utility model discloses the structure is reliable, does not have complicated structures such as upset, friction, compress tightly. The utility model discloses a self-locking mechanism simple structure, processing facility, low in manufacturing cost are honest and clean, have compatible operational safety and convenience. When the table is operated by a user, the rocking handle can be matched with the transmission rod, the limiting block is separated from the limiting idler wheel, and the lifting action of the hand-operated lifting table can be realized through the action of the rocking handle; when the table is lifted to the use height, the rocking handle is pulled out, the limiting block is clamped into the limiting roller, the self-locking device can realize self-locking, and the stability of the lifting table is ensured.

Drawings

The invention is further described with reference to the following figures and embodiments.

Fig. 1 is a schematic structural view of a self-locking mechanism of the present invention;

fig. 2 is an exploded schematic view of the self-locking mechanism of the present invention;

FIG. 3 is a schematic view A-A of FIG. 1;

FIG. 4 is a schematic structural view of a first locking block;

FIG. 5 is a schematic structural diagram of a stopper;

fig. 6 is a schematic view of the self-locking mechanism of the present invention in a self-locking state;

fig. 7 is a schematic view of the self-locking mechanism of the present invention in an unlocked state;

fig. 8 is a schematic structural view of a hand-operated lifting table comprising the self-locking mechanism.

The table top support comprises a support rod 1, a transmission rod 2, a self-locking device 21, a first locking block 211, a notch 212, a mounting cavity 22, a limiting roller 221, a roller tooth 222, a roller tooth groove 223, a shaft neck 23, an elastic piece 24, a limiting block 241, a side wall hole 242, a clamping strip 243, a convex hull 2421, an inclined plane 25, a second locking block 3, a rocking handle 4, a fastener 8 and a table top support.

Detailed Description

The invention will now be further described with reference to the accompanying drawings. These drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1 to 7, a self-locking mechanism, includes rocking handle 3, transfer line 1, self-lock device 2 includes first latch segment 21, second latch segment 25 and is located spacing gyro wheel 22 between the two, transfer line 1 passes first latch segment 21, spacing gyro wheel 22, second latch segment 25 back in proper order and is connected and then realize transfer line 1, spacing gyro wheel 22 and rocking handle 3's synchronous rotation with rocking handle 3 cooperation, spacing gyro wheel 22's side is installed stopper 24, stopper 24 can block into or break away from spacing gyro wheel 22, stopper 24 blocks into spacing gyro wheel 22 is in order to restrict the circular motion of spacing gyro wheel 22.

Preferably, the limiting roller 22 is installed in an installation cavity 212 formed by the first locking block 21 and the second locking block 25, the limiting block 24 is installed in a notch 211 formed by the first locking block 21 and the second locking block 25, and the limiting block 24 can slide in the notch 211.

Preferably, a side wall hole 241 is formed in a side wall of the stop block 24, and an elastic element 23 is installed between the side wall hole 241 and a side wall of the notch 211, and preferably, the elastic element 23 may be a cylindrical spring or a pressure spring. The elastic member 23 is partially inserted into the sidewall hole 241 of the stopper 24, and the stopper 24 is put into the notch 211 together with the elastic member 23, and the notch 211 restricts the movement of the stopper 24 in a partial direction and allows only the forward and backward movement thereof in the axial direction of the elastic member 23.

Preferably, the side wall of the stopper 24 facing the stopper roller 22 has a convex hull 243, the circumferential surface of the stopper roller 22 is provided with a plurality of roller tooth spaces 222 for the convex hull 243 to engage in or disengage from, and the roller tooth spaces 222 are formed between adjacent roller teeth 221.

Preferably, the front wall of the stopper 24 is provided with a bent clamping strip 242, and the end surface of the clamping strip 242 facing the transmission rod 1 is provided with a slope 2421, so that the stopper 24 is separated from the stopper roller 22 when the rocking handle 3 is inserted towards the inner end of the slope 2421, and the stopper 24 is clamped into the stopper roller 22 when the rocking handle 3 is pulled out towards the outer end of the slope 2421.

Preferably, two symmetrically arranged limiting blocks 24 are installed beside the limiting roller 22, and the clamping strips 242 of the two limiting blocks 24 relatively form a trapezoidal gap which is large in front and small in back and can facilitate the insertion of the rocking handle 3. The clamping strips 242 on the limiting block 24 adopt a structure with a big front and a small back, so that a trapezoidal gap is formed, the rocking handle 3 is inserted from the big head, and the guiding function is achieved, so that the installation is simpler and more convenient and labor-saving.

Preferably, the shaft end surface of the transmission rod 1 is polygonal, such as hexagonal, and the limit roller 22 is provided with a polygonal hole, such as hexagonal hole, matched with the shaft end surface of the transmission rod 1. The transmission rod 1 penetrates through the hexagonal hole of the limiting idler wheel 22 and then is connected with the rocking handle 3 in an inserting mode, and synchronous rotation of the transmission rod 1, the limiting idler wheel 22 and the rocking handle 3 can be achieved.

Preferably, the front and rear axle journals 223 of the limiting roller 22 are respectively installed in cooperation with the second locking center hole of the second locking block 25 and the first locking center hole of the first locking block 21, an accommodating groove 251 capable of allowing the clamping strip 242 to move therein is arranged on one side of the second locking block 25 facing the rocking handle 3, and the first locking block 21 and the second locking block 25 are connected by a fastener 4. Through the structure, the limiting roller 22 can be in rotary supporting fit with the first locking block 21 and the second locking block 25.

As shown in fig. 8, a hand-operated lifting table comprises the self-locking mechanism. Hand lift table include table 7, be located table below desktop support 8, self-lock device 2 also be located table 7's below, self-lock device 2's first latch segment or second latch segment mountable on desktop support 8, desktop support 8 restriction self-lock device's axial motion.

As shown in fig. 6, the self-locking state: in the initial condition, the elastic element 23 is in a pre-compression state, at this time, the rocking handle 3 is pulled out towards the outer end of the inclined surface 2421, the limiting block 24 clamps the convex hull 243 thereof into the roller tooth groove 222 of the limiting roller 22 under the compression force of the elastic element 23, and the limiting blocks 24 on both sides are in the same state. The limiting blocks 24 on the two sides cannot move in the circumferential direction, so that the circumferential rotation of the limiting roller 22 is limited. Because the limiting idler wheel 22 and the transmission rod 1 do circumferential synchronous motion, the transmission rod 1 cannot rotate circumferentially, the up-and-down motion of the hand-operated lifting table is limited finally, and the self-locking after the hand-operated lifting table is lifted and positioned is realized.

As shown in fig. 7, unlocked state: rocking handle 3 and transfer line 1 cooperation, rocking handle 3 inserts along the axis direction of transfer line 1, at this moment, rocking handle 3 inserts towards inclined plane 2421 inner, rocking handle 3 acts on the card strip 242 of stopper 24, stopper 24 receives the thrust and removes, further compress elastic component 23, the convex closure 243 of stopper 24 can be followed in spacing gyro wheel 22's the gyro wheel tooth's socket 222 and withdraw from simultaneously, thereby spacing gyro wheel 22 can the free rotation, it can be so that spacing gyro wheel 22 circumferential direction to rotate rocking handle 3 this moment, and then make transfer line 1 synchronous revolution.

Through set up axle journal 223 on spacing gyro wheel 22, during the installation, only need with the axle journal 223 disect insertion of spacing gyro wheel 22 first locking centre bore of first latch segment 21, the first locking centre bore of second latch segment 25, need not to use unnecessary accessory, the installation is more simple and convenient. The first locking block 21 and the second locking block 25 have the same structure, and only one pair of dies needs to be produced during die processing, so that the cost can be saved; meanwhile, the assembly of a production line is convenient.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.

Claims

1. The utility model provides a self-locking mechanism, includes rocking handle (3), transfer line (1), self-lock device (2), its characterized in that: self-lock device (2) include first latch segment (21), second latch segment (25) and be located spacing gyro wheel (22) between the two, transfer line (1) pass first latch segment (21), spacing gyro wheel (22), second latch segment (25) back in proper order and rocking handle (3) cooperation be connected and then realize the synchronous rotation of transfer line (1), spacing gyro wheel (22) and rocking handle (3), stopper (24) are installed to the side of spacing gyro wheel (22), stopper (24) can be gone into or break away from spacing gyro wheel (22), stopper (24) card is gone into spacing gyro wheel (22) is in order to restrict the circular motion of spacing gyro wheel (22).

2. A self-locking mechanism according to claim 1, wherein: the limiting roller (22) is arranged in a mounting cavity (212) formed by the first locking block (21) and the second locking block (25) relatively, the limiting block (24) is arranged in a notch (211) formed by the first locking block (21) and the second locking block (25) relatively, and the limiting block (24) can slide in the notch (211).

3. A self-locking mechanism according to claim 2, wherein: side wall holes (241) are formed in the side walls of the limiting blocks (24), and elastic pieces (23) are arranged between the side wall holes (241) and the side walls of the notches (211).

4. A self-locking mechanism according to claim 1, wherein: the side wall of the limiting block (24) facing the limiting roller (22) is provided with a convex hull (243), the circumferential surface of the limiting roller (22) is provided with a plurality of roller tooth grooves (222) for the convex hull (243) to be clamped in or separated from, and the roller tooth grooves (222) are formed between adjacent roller teeth (221).

5. A self-locking mechanism according to any one of claims 1 to 4, wherein: the front wall of the limiting block (24) is provided with a bent clamping strip (242), the end face, facing the transmission rod (1), of the clamping strip (242) is provided with a slope (2421), so that when the rocking handle (3) is inserted towards the inner end of the slope (2421), the limiting block (24) is separated from the limiting roller (22), and when the rocking handle (3) is pulled out towards the outer end of the slope (2421), the limiting block (24) is clamped into the limiting roller (22).

6. A self-locking mechanism according to claim 5, wherein: the side of spacing gyro wheel (22) installs stopper (24) that two symmetries set up, and card strip (242) of two stopper (24) form the trapezoidal space that can be convenient for rocking handle (3) male before big back relatively.

7. A self-locking mechanism according to claim 1, wherein: the shaft end face of the transmission rod (1) is polygonal, and the limiting idler wheel (22) is provided with a polygonal hole matched with the shaft end face of the transmission rod (1).

8. A self-locking mechanism according to claim 1, wherein: the shaft journals (223) on the front side and the rear side of the limiting roller (22) are respectively matched with a second locking center hole of the second locking block (25) and a first locking center hole of the first locking block (21) in an installation mode, an accommodating groove (251) capable of enabling the clamping strip (242) to move inside is formed in one side, facing the rocking handle (3), of the second locking block (25), and the first locking block (21) is connected with the second locking block (25) through a fastening piece (4).

9. A hand-operated lifting table is characterized in that: comprising a self-locking mechanism according to any one of claims 1 to 8.

10. The hand-operated lifting table as recited in claim 9, wherein: comprises a table board (7) and a table top bracket (8) positioned below the table board.