CN209677726U - A kind of lifting self-locking device and same table - Google Patents

Abstract

A kind of lifting self-locking device, including connecting shell, a cavity is provided in connection shell, bevel gear set is provided in cavity, connection shell is provided with the first delivery outlet and the second delivery outlet, first delivery outlet and second delivery outlet are vertical setting, first delivery outlet is provided with screw rod, one end of screw rod is protruded into connection shell by the first delivery outlet, it is sequentially connected with bevel gear set, second delivery outlet is provided with lock tube and transmission shaft, one end of transmission shaft passes through the lock tube and protrudes into connection shell, it is sequentially connected with bevel gear set, the excircle of transmission shaft is also arranged with closing piece, the excircle of closing piece is arranged with torsional spring, torsional spring includes ontology and end, the ontology and closing piece of torsional spring are socketed, the end of torsional spring is protruded into the second delivery outlet, it is abutted with lock tube surface, the utility model can effectively prevent when same table carrying stress is excessive, table The case where plate automatic descending, guarantees that same table being capable of normal use.

Description

A kind of lifting self-locking device and same table

Technical field

The utility model relates to lifting device technical field more particularly to a kind of lifting self-locking device and same tables.

Background technique

Same table is a kind of height-adjustable desk, and height can be adjusted according to the height of people, sitting posture and stance；It is existing The lifting structure of some same tables includes desktop, pedestal and liftable column, and liftable column uses stretching structure.

When people lies prone on the table or under both hands by desktop, same table load capacity is larger, and excessive weight can oppress Desktop decline, influences normal use, and therefore, needing one kind can prevent desktop from declining when same table load capacity is larger Self-locking device.

Summary of the invention

The purpose of this utility model is that a kind of lifting self-locking device and same table are provided in view of the deficiencies of the prior art, this The case where utility model can effectively prevent when same table carrying stress is excessive, desktop automatic descending, guarantees that same table can be just It is often used.

The utility model is achieved through the following technical solutions, a kind of lifting self-locking device, including connection shell, institute It states in connection shell and is provided with a cavity, bevel gear set is provided in the cavity, the connection shell is provided with the first output Hole and the second delivery outlet, first delivery outlet and second delivery outlet are vertical setting, and first delivery outlet is provided with One end of screw rod, the screw rod is protruded into connection shell by the first delivery outlet, is sequentially connected with bevel gear set, described second is defeated Portal and be provided with lock tube and transmission shaft, one end of the transmission shaft passes through the lock tube and protrudes into connection shell, with bevel gear Group transmission connection, the excircle of the transmission shaft are also arranged with closing piece, and the excircle of the closing piece is arranged with torsional spring, the torsional spring Including ontology and end, the ontology of the torsional spring and closing piece are socketed, and the end of the torsional spring is protruded into the second delivery outlet, and with lock Surface is covered to abut.

Preferably, the bevel gear set includes first bevel gear and second bevel gear, the first bevel gear and described Second bevel gear is vertically arranged, the first bevel gear and second bevel gear engagement, one end of the screw rod and the first cone Gear drive connection；The transmission shaft protrudes into connection intracorporal one end of shell and second bevel gear is sequentially connected.

Preferably, the other end of the screw rod is provided with the driving mechanism of driving screw rod rotation, the driving mechanism is Handwheel or motor.

Preferably, the excircle of the transmission shaft is also arranged with the outline border for protecting transmission shaft.

Preferably, the connection shell includes upper housing and lower case, there are four connecting column, institutes for the lower case setting Stating upper housing setting, there are four connecting holes corresponding with connecting column.

A kind of same table, including desktop, the lower end of the desktop are provided at least one lifting self-locking device.

The utility model has the beneficial effects that for being arranged below desktop, four liftings are arranged altogether in the utility model Self-locking device when work, passes through the one of lifting self-lock dress of driving by transmission shaft driven between each lifting self-locking device The screw rod rotation set, screw rod change transmission direction by the intracorporal bevel gear set of connection shell, and driving transmission shaft rotation realizes one Power source drives the screw rod rotation of four lifting self-locking devices simultaneously, and desktop is steadily risen or fallen；Desktop rises When, transmission shaft rotation is driven by screw rod, while torsional spring being driven to rotate, torsional spring enlarged outside diameter will push the end of torsional spring towards lock Set direction compresses, and the end of torsional spring and lock tube skin-friction force increase, and prevents from causing transmission shaft anti-because desktop receiving pressure is excessive Turn, disconnects the interaction relation between four lifting self-locking devices；When dropping on desktop, transmission shaft rotation is driven by screw rod, simultaneously Torsional spring rotation, torsional spring reduced diameter are driven, so that the end of torsional spring is displaced towards lock tube opposite direction, the end and lock tube surface of torsional spring Frictional force is gradually reduced, and releasing is self-locking, continues to link between four lifting self-locking devices, the utility model, which can effectively prevent, to be risen Drop table carrying stress it is excessive when, the case where desktop automatic descending, guarantee that same table being capable of normal use.

Detailed description of the invention

Fig. 1 is the schematic perspective view of the utility model.

Fig. 2 is the schematic diagram of the section structure of the utility model.

Fig. 3 is the schematic diagram of the section structure at another visual angle of the utility model.

Fig. 4 is the enlarged structure schematic diagram in Fig. 3 at A.

Fig. 5 is the schematic perspective view of the utility model bevel gear set.

Fig. 6 is the structural schematic diagram of the utility model transmission shaft and outline border.

Fig. 7 is the decomposition texture schematic diagram that the utility model connects shell.

Specific embodiment

1 the utility model is described further to attached drawing 7 and specific embodiment with reference to the accompanying drawing.

As shown in Figures 1 to 4, lifting self-locking device, including connection shell 1 are planted, is provided with an appearance in the connection shell 1 Chamber, is provided with bevel gear set 2 in the cavity, and the connection shell 1 is provided with the first delivery outlet and the second delivery outlet, and described One delivery outlet and second delivery outlet are vertical setting, and first delivery outlet is provided with screw rod 3, one end of the screw rod 3 It is protruded into connection shell 1 by the first delivery outlet, is sequentially connected with bevel gear set 2, second delivery outlet is provided with 4 He of lock tube Transmission shaft 5, one end of the transmission shaft 5 pass through the lock tube 4 and protrude into connection shell 1, be sequentially connected with bevel gear set 2, The excircle of the transmission shaft 5 is also arranged with closing piece 6, and the excircle of the closing piece 6 is arranged with torsional spring 7, and the torsional spring 7 includes this Body 71 and end 72, the ontology 71 and closing piece 6 of the torsional spring 7 are socketed, and the end 72 of the torsional spring 7 is protruded into the second delivery outlet, And it is abutted with 4 surface of lock tube.

The present embodiment will be used to be arranged below desktop, and four lifting self-locking device (lifting self-locking devices are arranged altogether It is arranged what quantity was determined according to the support post quantity of same table), it is driven by transmission shaft 5 between each lifting self-locking device, When work, by driving the screw rod 3 of one of lifting self-locking device to rotate, screw rod 3 passes through the connection intracorporal bevel gear set 2 of shell Change transmission direction, driving transmission shaft 5 rotates, and realizes a power source while driving 3 turns of screw rod of four lifting self-locking devices It is dynamic, desktop is steadily risen or fallen；When desktop rises, transmission shaft 5 is driven to rotate by screw rod 3, while driving torsion Spring 7 rotates, and 7 enlarged outside diameter of torsional spring, the end 72 that will push torsional spring 7 is compressed towards 4 direction of lock tube, the end 72 of torsional spring 7 and lock tube 4 Skin-friction force increases, and prevents from causing transmission shaft to invert because desktop receiving pressure is excessive, disconnecting between four lifting self-locking devices Interaction relation, prevent same table from declining；When dropping on desktop, transmission shaft 5 is driven to rotate by screw rod 3, while driving 7 turns of torsional spring It is dynamic, 7 reduced diameter of torsional spring, so that the end 72 of torsional spring 7 is displaced towards 4 opposite direction of lock tube, the end 72 and 4 surface of lock tube of torsional spring 7 Frictional force is gradually reduced, and releasing is self-locking, continues to link between four lifting self-locking devices, the utility model, which can effectively prevent, to be risen Drop table carrying stress it is excessive when, the case where desktop automatic descending, guarantee that same table being capable of normal use.

As shown in figure 5, the bevel gear set 2 includes first bevel gear 21 and second bevel gear 22, described in the present embodiment First bevel gear 21 and the second bevel gear 22 are vertically arranged, and the first bevel gear 21 and the second bevel gear 22 are nibbled It closes, one end of the screw rod 3 and first bevel gear 21 are sequentially connected；The transmission shaft 5 protrudes into one end and the in connection shell 1 The transmission connection of two bevel gears 22, drives one of screw rod 3 to rotate, and screw rod 3 is changed by the intracorporal bevel gear set 2 of connection shell to be passed Dynamic direction, driving transmission shaft 5 rotate, and realize a power source while the screw rod 3 of four lifting self-locking devices being driven to rotate, so that Desktop can steadily rise or fall.

In the present embodiment, the other end of the screw rod 3 is provided with the driving mechanism that driving screw rod 3 rotates, the driving machine Structure is handwheel (manual actuation) or motor (electric drive).

As shown in fig. 6, the excircle of the transmission shaft 5 is also arranged with the outline border for protecting transmission shaft 5 in the present embodiment 8, when transmission shaft 5 being avoided to work, transmission is influenced by external force.

As shown in fig. 7, the connection shell 1 includes upper housing 11 and lower case 12, the lower case 12 in the present embodiment There are four connecting columns 121 for setting, and there are four connecting hole 111 corresponding with connecting column 121, upper housings 11 for the setting of upper housing 11 After 12 pairing of lower case, four connecting columns 121 are protruded into connecting hole 111, then are fixed by screw, and bevel gear set 2 is wrapped up In the cavity of connection shell 1, when bevel gear set 2 being avoided to work, transmission is influenced by external force.

A kind of same table of the utility model, including desktop, the lower end of the desktop are provided at least one lifting self-lock dress It sets, by driving the screw rod 3 of one of lifting self-locking device to rotate, screw rod 3 is changed by the intracorporal bevel gear set 2 of connection shell Transmission direction, driving transmission shaft 5 rotate, and realize a power source while the screw rod 3 of four lifting self-locking devices being driven to rotate, make Obtaining desktop can steadily rise or fall, and screw rod 3 drives transmission shaft 5 to rotate, while torsional spring 7 being driven to rotate, and 7 outer diameter of torsional spring expands Greatly, the end 72 that will push torsional spring 7 is compressed towards 4 direction of lock tube, and the end 72 of torsional spring 7 and 4 skin-friction force of lock tube increase, and is prevented Because desktop receiving pressure is excessive, transmission shaft is caused to invert, desktop decline.

The above content is only the preferred embodiment of the utility model, for those of ordinary skill in the art, according to this reality With novel thought, there will be changes in the specific implementation manner and application range, and the content of the present specification should not be construed as Limitations of the present invention.

Claims (6)

1. a kind of lifting self-locking device, it is characterised in that: including connecting shell, be provided with a cavity, institute in the connection shell It states and is provided with bevel gear set in cavity, the connection shell is provided with the first delivery outlet and the second delivery outlet, first output Hole and second delivery outlet are vertical setting, and first delivery outlet is provided with screw rod, and one end of the screw rod passes through first Delivery outlet protrudes into connection shell, and is sequentially connected with bevel gear set, and second delivery outlet is provided with lock tube and transmission shaft, institute The one end for stating transmission shaft passes through the lock tube and protrudes into connection shell, is sequentially connected with bevel gear set, outside the transmission shaft Circumference is also arranged with closing piece, and the excircle of the closing piece is arranged with torsional spring, and the torsional spring includes ontology and end, the torsional spring Ontology and closing piece are socketed, and the end of the torsional spring is protruded into the second delivery outlet, and is abutted with lock tube surface.

2. a kind of lifting self-locking device according to claim 1, it is characterised in that: the bevel gear set includes the first cone tooth Wheel and second bevel gear, the first bevel gear and the second bevel gear are vertically arranged, the first bevel gear and described the The engagement of two bevel gears, one end of the screw rod and first bevel gear are sequentially connected；The transmission shaft protrudes into connection shell intracorporal one End is sequentially connected with second bevel gear.

3. a kind of lifting self-locking device according to claim 1, it is characterised in that: the other end of the screw rod is provided with drive The driving mechanism of dynamic screw rod rotation, the driving mechanism are handwheel or motor.

4. a kind of lifting self-locking device according to claim 1, it is characterised in that: the excircle of the transmission shaft is also arranged There is the outline border for protecting transmission shaft.

5. a kind of lifting self-locking device according to claim 1, it is characterised in that: the connection shell include upper housing and Lower case, there are four connecting columns for the lower case setting, and there are four connecting holes corresponding with connecting column for the upper housing setting.

6. a kind of same table, including desktop, it is characterised in that: the lower end of the desktop be provided at least one claim 1 to Lifting self-locking device described in claim 5 any claim.