CN218052377U

CN218052377U - Quick-change chuck and screwdriver

Info

Publication number: CN218052377U
Application number: CN202222082335.5U
Authority: CN
Inventors: 伍先明; 胡红波; 刘高
Original assignee: Shenzhen Yankong Automation Technology Co ltd
Current assignee: Shenzhen Yankong Automation Technology Co ltd
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2022-12-16
Anticipated expiration: 2032-08-04

Abstract

The utility model discloses a quick change chuck and screwdriver, include: the chuck, centre gripping subassembly and movable sleeve, be equipped with two spouts on the movable sleeve, the chuck outer wall is formed with the location step face that sets up, the location step face is located the spout below, the centre gripping subassembly is including locating the clamping part in the spout, the movable sleeve cover has along the gliding motion stroke of chuck length direction primary importance to second position, the movable sleeve inner wall is formed with one and dodges the groove, when the movable sleeve is in the primary importance, movable sleeve's lower terminal surface and location step face butt, it is in the through state to dodge the groove this moment and spout. The utility model discloses among the technical scheme, the chuck outer wall is formed with the location step face that sets up, when activity sleeve activity butt and location step face, dodges groove and spout and just in time be the through state, and the clamping part can be under the promotion of criticizing the head, and the accessible gets into dodges in the groove, and need not carry out the secondary and aim at, improves the change efficiency of criticizing the head.

Description

Quick-change chuck and screwdriver

Technical Field

The utility model relates to a fastener installation technical field, in particular to quick change chuck and screwdriver.

Background

As a tool for screwing and unscrewing threads, the screwdriver is widely applied to production and life of people, different screwdriver bits are needed for different screw heads, and in order to solve the problems, people invent a plurality of screwdrivers capable of quickly changing the screwdriver bits.

The essential of these screwdrivers is that the outside of criticizing first connecting rod sets up a movable sleeve that is equipped with and dodges the groove, when need changing or installing new criticizing the head, only need to aim at the sliding tray of criticizing first connecting rod buckle with the telescopic groove of dodging of activity, make and criticize first buckle slip in and dodge the groove, can realize criticizing quick change and installation of head, however, at daily in-process that uses, the groove of dodging of movable sleeve is hardly once just to realize the alignment with the sliding tray of locating the connecting rod, this also makes the installation and the change of criticizing the head, has had very big contingency.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a quick-change chuck, which aims to provide a quick-change chuck and a screwdriver which can be quickly changed and can complete the loading and unloading of a batch head at one time.

In order to achieve the above object, the utility model provides a quick-change chuck, include:

the clamping head is internally provided with an accommodating cavity for accommodating the batch head, the inner wall of the accommodating cavity is at least provided with two sliding grooves in a penetrating manner, the outer wall of the clamping head is provided with a positioning step surface which is arranged upwards, and the positioning step surface is positioned below the sliding grooves;

the clamping assembly comprises a clamping part arranged in the sliding groove, and the clamping part is provided with a first clamping end and a second clamping end which are opposite; and the number of the first and second groups,

the movable sleeve is sleeved on the chuck and has a movement stroke sliding from a first position to a second position along the length direction of the chuck, an avoidance groove and an abutting surface are formed on the inner wall of the movable sleeve, and the abutting surface is positioned below the avoidance groove;

when the movable sleeve is located at the first position, the lower end face of the movable sleeve is abutted against the positioning step face, the avoidance groove and the sliding groove are oppositely arranged and are communicated with each other, the second clamping end of the clamping part protrudes out of the outer wall of the chuck and extends into the avoidance groove, the first clamping end retracts into the sliding groove, and the accommodating cavity is used for inserting and installing the screwdriver head;

when the movable sleeve is located at the second position, the avoiding groove and the sliding groove are arranged in a staggered mode, the second clamping portion abuts against the abutting surface, and the first clamping end extends into the accommodating cavity to be matched with the matching portion of the screwdriver bit to clamp the screwdriver bit.

Optionally, the clamping assembly comprises: the two balls are respectively arranged in the two sliding grooves, each sliding groove comprises a first opening arranged on the outer wall of the chuck and a second opening arranged on the inner wall of the accommodating cavity, the diameter of each first opening is larger than that of each ball, and the diameter of each second opening is smaller than that of each ball;

the clamping portion comprises the ball, the first clamping end comprises a part of the ball protruding out of the first opening, and the second clamping end comprises a part of the ball protruding out of the second opening.

Optionally, the quick-change chuck further comprises a driving assembly to drive the movable sleeve to move along the first position and the second position.

Optionally, the chuck comprises a holding section and a mounting section, the accommodating cavity is formed in the mounting section, and the positioning step surface is formed on the outer wall of the mounting section;

an installation surface is formed between the installation section and the holding section;

the driving assembly comprises a spring, one end of the spring is installed on the installation surface, and the other end of the spring is connected with the bottom of the movable sleeve.

Optionally, the mounting section is far away from the holding section end and is provided with a mounting groove;

the quick-change chuck further comprises a limiting check ring, and the limiting check ring is installed in the installation groove and protrudes out of the outer wall of the installation section;

the upper side of the movable sleeve abuts against the limiting retainer ring and protrudes out of the outer wall of the mounting section.

Optionally, a notch is formed in the outer edge of the limiting retainer ring.

Optionally, the sectional area of the sliding groove is gradually reduced along the direction from the outer wall of the chuck to the accommodating cavity to form a stop structure.

Optionally, a force-bearing limiting groove is oppositely arranged on the accommodating cavity wall of the upper end face of the chuck, and is used for matching with the limiting part of the batch head, assisting the batch head to be mounted on the quick-change chuck, and bearing the axial force and the radial force applied to the batch head during working.

Optionally, an inclined surface is disposed between the avoiding groove and the abutting surface.

The utility model also provides a screwdriver, the screwdriver includes the quick change chuck, the quick change chuck includes:

the clamping head is provided with a holding cavity in which the batch head is held, two sliding grooves penetrate through two opposite sides of the inner wall of the holding cavity, an upward positioning step surface is formed on the outer wall of the clamping head, and the positioning step surface is positioned below the sliding grooves;

when the movable sleeve is located at the first position, the lower end face of the movable sleeve is abutted against the positioning step face, the avoidance groove and the sliding groove are oppositely arranged and are communicated with each other, the second clamping end of the clamping part protrudes out of the outer wall of the chuck and extends into the avoidance groove, the first clamping end is retracted into the sliding groove, and the accommodating cavity is used for inserting and installing the screwdriver head;

The utility model discloses among the technical scheme, the chuck outer wall is formed with the location step face that sets up, works as when the movable sleeve activity is to the primary importance, the location step face will with movable sleeve's bottom looks butt to prevent movable sleeve to continue the downstream, and the groove of dodging among the movable sleeve this moment, just in time with the spout is relative setting, the clamping part can under the promotion of wholesale head, unimpeded entering dodge in the groove, dodge the required space of wholesale head installation fast, so that the user once can accomplish the dismouting of wholesale head in the quick change chuck, improve the change efficiency of wholesale head.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is an exploded view of an embodiment of a quick-change chuck according to the present invention;

fig. 2 is a sectional view of the quick-change chuck according to the present invention;

FIG. 3 is a cross-sectional view of the chuck of FIG. 1;

FIG. 4 is a cross-sectional view of the removable sleeve of FIG. 1;

fig. 5 is a cross-sectional view of an embodiment of the present invention with the movable sleeve in the first position;

fig. 6 is a cross-sectional view of an embodiment of the movable sleeve of the present invention in a second position.

The reference numbers indicate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1000	Quick-change chuck	21	Clamping part
2000	Screwdriver	21a	Ball bearing
				1	Clamping head	211	A first clamping end
11	Containing cavity	212	Second clamping end
				111	Sliding chute	3	Movable sleeve
112	Second opening	31	Dodging groove
				12	Positioning step surface	32	Abutting surface
13	First opening	33	Inclined plane
				14	Holding section	4	Drive assembly
141	Mounting groove	4a	Spring
				15	Mounting section	5	Spacing retainer ring
16	Mounting surface	51	Gap
				17	Force bearing limit groove	6	Screwdriver head
2	Clamping assembly

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, back, 8230; \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

Furthermore, the descriptions in the present application related to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of technical features indicated are implicitly being indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In order to solve the above problem, the utility model provides a quick change chuck and screwdriver aims at providing one kind and changes swift, can once only accomplish quick change chuck and the screwdriver of batch head loading and unloading, wherein, fig. 1 to fig. 6 are the utility model provides a structural schematic of an embodiment of quick change chuck and screwdriver.

Referring to fig. 1 and 2, the present invention provides a quick-change chuck 1000 and a screwdriver 2000, including: chuck, centre gripping subassembly 2 and activity sleeve 3, be formed with in the chuck and hold and establish chamber 11 for hold and establish batch head 6, hold and establish the relative both sides in chamber 11 inner wall and run through and be equipped with two spout 111, the chuck outer wall is formed with the location step face 12 that sets up, location step face 12 is located spout 111 below, centre gripping subassembly 2 is including locating clamping part 21 in spout 111, clamping part 21 has relative first exposed core 211 and second exposed core 212, activity sleeve 3 cover is located on the chuck, and has along the gliding motion stroke of chuck length direction first position to second position, activity sleeve 3 inner wall is formed with one and dodges groove 31 and a butt face 32, butt face 32 is located dodge the groove 31 below, when the movable sleeve 3 is located at the first position, the lower end face of the movable sleeve 3 abuts against the positioning step face 12, the avoiding groove 31 and the sliding groove 111 are oppositely arranged and are communicated with each other, the second clamping end 212 of the clamping portion 21 protrudes out of the outer wall of the chuck and extends into the avoiding groove 31, the first clamping end 211 is retracted into the sliding groove 111, the accommodating cavity 11 is used for inserting and installing the batch head 6, when the movable sleeve 3 is located at the second position, the avoiding groove 31 and the sliding groove 111 are arranged in a staggered manner, the second clamping portion 21 abuts against the abutting face 32, and the first clamping end 211 extends into the accommodating cavity 11 to be matched with the matching portion of the batch head 6 so as to clamp the batch head 6.

Among the technical scheme of the utility model, the chuck outer wall is formed with the location step face 12 that sets up, works as when the activity of movable sleeve 3 is to the primary importance, location step face 12 will with the bottom looks butt of movable sleeve 3 to prevent movable sleeve 3 to continue the downstream, and dodge groove 31 among the movable sleeve 3 this moment, just in time with spout 111 is relative setting, clamping part 21 can under the promotion of criticizing head 6, unimpeded entering dodge in the groove 31, dodge criticize the required space of 6 installations of head fast, so that the user once can accomplish the dismouting of criticizing head 6 in quick change chuck 1000, improve the change efficiency of criticizing head 6.

It can be understood, the quantity of spout 111 can be two, also can be three, also can be more, works as when spout 111 quantity is two, spout 111 sets up relatively on holding and establishing chamber 11 inner wall, locates with common centre gripping hold and establish the batch head 6 in chamber, works as when spout 111 quantity is three, spout 111 is in hold and establish and be the triangle in the chamber 11 and arrange, locate with common centre gripping hold and establish batch head 6 in chamber 11, works as spout 111 quantity is four, spout 111 is in hold and establish chamber 11, two liang are relative, common centre gripping batch head 6, the utility model discloses do not limit to this.

The utility model discloses it is not limited to the concrete form of clamping part 21, clamping part 21 can be along the slider of spout 111 activity, also can be along the rolling ball 21a of spout 111, considers that ball 21a is rolling friction, and is in more easily slide in spout 111, therefore, please refer to fig. 2 and fig. 3, in an embodiment of the utility model, clamping component 2 includes two balls 21a, two ball 21a locates two respectively in spout 111, spout 111 is including locating the first opening 13 of chuck outer wall, and locate hold the second opening 112 of establishing the intracavity wall, the diameter of first opening 13 is greater than ball 21a diameter, second opening 112 diameter is less than ball 21a diameter, clamping part 21 includes ball 21a, outstanding in first exposed portion 211 includes ball 21a the part of first opening 13, second clamping end 212 includes the part of ball 21a second opening 112.

Referring to fig. 5, in the above embodiment, the balls 21a are rolled in the sliding groove 111, because the diameter of the balls 21a is smaller than the first opening 13 on the outer wall of the chuck and larger than the second opening 112 on the inner wall of the accommodating cavity 11, the balls 21a can easily pass through the first opening 13, but cannot pass through the second opening 112, and only protrude out of the second opening 112, when the movable sleeve 3 is in the first state, the sliding groove 111 and the avoiding groove 31 of the movable sleeve 3 are in a through state, the balls 21a can enter the avoiding groove 31 from the first opening 13 under the pushing of the batch head 6, and at the same time, a space is left for the installation of the batch head 6 in the accommodating cavity 11.

Referring to fig. 6, when the movable sleeve 3 moves upward and moves from the first state to the second state, the balls 21a will move toward the second opening 112 under the pushing of the abutting surface 32, and will partially protrude from the second opening 112, and the part of the balls 21a protruding from the second opening 112 abuts against the batch head 6, so that the batch head 6 is fixed in the accommodating cavity 11, thereby completing the installation of the batch head 6 in the quick-change chuck 1000, meanwhile, when the batch head 6 needs to be replaced, the movable sleeve 3 only needs to be pulled down, so that the movable sleeve 3 returns to the first position again, so that the sliding groove 111 and the avoiding groove 31 again present a through state, and at this time, the balls 21a will move toward the avoiding groove 31 under the pushing of the batch head 6, thereby completing the disassembly of the batch head 6 in the quick-change chuck 1000.

It can be understood that, when the movable sleeve 3 is moved from the first position to the second position, the ball 21a will be pushed to the bit 6 quickly, in order to limit the movement of the ball 21a, the ball 21a is prevented from colliding with the bit 6, and the bit 6 is damaged, in an embodiment of the present invention, the sectional area of the sliding groove 111 is gradually reduced along the outer wall of the chuck 1 to the direction of the accommodating cavity 11, so as to form a stop structure, thereby achieving the purpose of limiting the movement of the ball 21a toward the accommodating cavity 11.

It should be explained that the stopping structure is essentially to reduce the space of the ball 21a moving towards the accommodating cavity, and increase the resistance of the ball 21a moving towards the accommodating cavity 11, so as to achieve the purpose of limiting the movement of the ball 21a, and based on this, the stopping structure may have various forms, for example, the stopping structure may be a tapered groove with gradually reduced sectional area along the outer wall of the chuck 1 to the direction of the accommodating cavity 11, or a stepped surface with gradually raised section along the outer wall of the chuck 1 to the direction of the accommodating cavity 11, and the stepped surface may be a horizontal surface or an inclined surface, and the present invention is not limited thereto.

In order to make the movable sleeve 3 move to the second position from the first position, ball 21a can by dodge the smooth butt in groove 31 and be in on the butt face 32, please refer to fig. 4, in an embodiment of the present invention, dodge groove 31 with between the butt face 32, be equipped with an inclined plane 33, work as when movable sleeve 3 moves upwards, ball 21a will fall into earlier on inclined plane 33, again inclined plane 33 butt is in on the butt face 32, so, to guarantee ball 21a is in smooth transition in the movable sleeve 3, improve the stationarity that wholesale 6 changed, prevent simultaneously ball 21a when withdrawing dodge groove 31, collide with dodge groove 31, damage ball 21a.

For driving the movable sleeve 3 to move along the first position to the second position, in an embodiment of the present invention, the quick-change chuck 1000 further includes a driving assembly 4, and the movable sleeve 3 can be driven by the driving assembly 4 to realize the quick up-and-down movement of the chuck.

In the above embodiment, the driving component 4 may be an electric push rod, and may also be a spring 4a, the present invention is not limited thereto, and from the perspective of cost, in an embodiment of the present invention, the chuck includes a holding section 14 and an installation section 15, the accommodating cavity 11 is formed in the installation section 15, the positioning step surface 12 is formed on the outer wall of the installation section 15, an installation surface 16 is formed between the installation section 15 and the holding section 14, the driving component 4 includes a spring 4a, one end of the spring 4a is installed on the installation surface 16, the other end is connected to the bottom of the movable sleeve 3, the user can pull the movable sleeve 3 to the first position through manpower, the avoiding groove 31 of the movable sleeve 3 is in a through state with the chute 111 of the chuck at this time, and the spring 4a is in a compression state at this time, when the bit 6 is replaced or disassembled, only the force applied to the movable sleeve 3 needs to be evacuated, so that the movable sleeve 3 can be returned to the second position again under the acting force of the spring 4 a.

It can be understood that, when the movable sleeve 3 moves upward, the user is difficult to make accurate control of the moving distance, in order to solve the above problem, in an embodiment of the present invention, the mounting section 15 of the chuck is provided with a limiting structure to ensure that when the movable sleeve moves upward, the movable sleeve can be stopped accurately at the preset position, specifically, the utility model provides a chuck the mounting section 15 is kept away from the holding section 14 end, which is provided with a mounting groove 141, the quick-change chuck 1000 further comprises a limiting retainer ring 5, the limiting retainer ring 5 is installed in the mounting groove 141 and protrudes from the outer wall of the mounting section 15, the upper side of the movable sleeve 3 is supported on the limiting retainer ring 5 protruding from the outer wall of the mounting section 15, when the movable sleeve 3 moves upward to the preset position, the advancing direction of the movable sleeve 3 is blocked by the limiting retainer ring 5 to ensure that the movable sleeve 3 is fixed at the preset position.

Meanwhile, in the above embodiment, the limit stop ring 5 can also serve the purpose of stopping the spring 4a from advancing further, when the movable sleeve 3 moves upwards under the pushing of the spring 4a, the limit stop ring 5 will provide a limit for the movable sleeve 3 to prevent the movable sleeve 3 from falling off the chuck 1 under the pushing of the spring 4 a.

Further, for making the installation that spacing retaining ring 5 can be swift in the mounting groove 141 the utility model discloses an in the embodiment, spacing retaining ring 5 outer fringe is equipped with a breach 51, through breach 51, but spacing retaining ring 5 quick joint in the mounting groove 141.

For preventing screwdriver 2000 during operation, the bearing capacity that criticizes head 6 receives is in clamping part 21, thereby it is right clamping part 21 causes the damage in the embodiment of the utility model, on the appearance of chuck up end establishes the chamber wall, be provided with load spacing groove 17 relatively, be used for with the spacing portion cooperation of criticizing head 6, supplementary criticize head 6 install in on the quick change chuck to and bear the axial force and the radial force that criticize head 6 during operation received, it is concrete, work as criticize head 6 install in when the chuck is last, criticize head 6's spacing portion, the butt is in on the holding surface of chuck load spacing groove 17, meanwhile, load spacing groove 17 follows criticize head 6 spacing portion both sides hold tightly criticize head 6, work as screwdriver 2000 when beginning to work, the axial force that criticize head 6 bore will act on the holding surface of load spacing groove 17, criticize head 6 radial force that bears will act on the bearing spacing groove 17 both sides, so, when screwdriver 2000 during operation, criticize head 6 will not receive radial force and radial clamping part 21 can avoid because the bearing is damaged greatly.

Meanwhile, the bearing limiting groove 17 has guiding and positioning functions on the bit 6, the bit 6 can be quickly installed in the quick-change chuck through the bearing limiting groove 17, and meanwhile, when the limiting part of the bit 6 abuts against the supporting surface of the bearing limiting groove 17, the matching part of the bit 6 is just aligned with the clamping part 21.

The utility model also provides a screwdriver, this screwdriver include the quick change chuck, and the concrete structure of this quick change chuck refers to above-mentioned embodiment, because this screwdriver has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A quick-change chuck for holding batch heads, comprising:

the clamping assembly comprises a clamping part arranged in the sliding groove, and the clamping part is provided with a first clamping end and a second clamping end which are opposite; and (c) a second step of,

when the movable sleeve is located at the second position, the avoiding groove and the sliding groove are arranged in a staggered mode, the second clamping end abuts against the abutting surface, and the first clamping end extends into the accommodating cavity to be matched with the matching part of the screwdriver bit to clamp the screwdriver bit.

2. The quick-change chuck according to claim 1, wherein the clamping assembly comprises: the two balls are respectively arranged in the two sliding grooves, each sliding groove comprises a first opening arranged on the outer wall of the chuck and a second opening arranged on the inner wall of the accommodating cavity, the diameter of each first opening is larger than that of each ball, and the diameter of each second opening is smaller than that of each ball;

3. The quick-change chuck according to claim 1, wherein the quick-change chuck further comprises a drive assembly to drive the movable sleeve to move along the first and second positions.

4. The quick-change chuck according to claim 3, wherein the chuck includes a gripping section and a mounting section, the receiving cavity is formed in the mounting section, and the positioning step surface is formed on an outer wall of the mounting section;

5. The quick-change chuck according to claim 4, wherein the mounting segment is provided with a mounting groove at a position away from the holding segment end;

the upper side of the movable sleeve abuts against the limiting check ring and protrudes out of the outer wall of the mounting section.

6. The quick-change chuck according to claim 5, wherein the retainer ring has a notch formed in an outer periphery thereof.

7. The quick-change chuck according to claim 1, wherein the cross-sectional area of the slot decreases progressively in the direction from the outer chuck wall to the receiving cavity to form a stop.

8. The quick-change chuck according to claim 1, wherein the holding cavity wall of the upper end surface of the chuck is provided with force-bearing limiting grooves for cooperating with the limiting portions of the bit to assist the mounting of the bit on the quick-change chuck and to bear the axial and radial forces to which the bit is subjected during operation.

9. The quick-change chuck according to claim 1, wherein an inclined surface is provided between the avoiding groove and the abutting surface.

10. A screwdriver comprising a quick-change chuck according to any one of claims 1 to 9.