Guide shaft with locking structure
By setting a locking structure of a push rod, a return spring, a connecting rod and a rubber plate in the guide shaft, the problem of the guide shaft sliding after stopping is solved, effective locking and unlocking functions are achieved, and the stability of the guide shaft is improved.
Patent Information
- Application Number
- CN202422757548.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-13
AI Technical Summary
The existing guide shaft is prone to sliding after stopping and lacks a locking function.
A guide shaft with a locking structure is designed. A push rod, a return spring, a connecting rod, a rubber plate and a limit mechanism are arranged inside the guide shaft. The locking is achieved by friction between the rubber plate and the linear bearing, and the push rod is limited and released by the limit mechanism.
The linear bearing can be effectively locked and unlocked when needed, thereby improving the stability and reliability of use.
Smart Images
Figure CN223387791U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of guide shafts, in particular to a guide shaft with a locking structure. Background Art
[0002] In mechanical linkage mechanisms, guide shafts are essential key components that play a guiding role and are generally used in conjunction with linear bearings.
[0003] However, the guide shaft currently used does not have a locking function, and it is easy for the linear bearing to still slide slightly after stopping. For this reason, we propose a guide shaft with a locking structure. Utility Model Content
[0004] The purpose of the present invention is to provide a guide shaft with a locking structure to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a guide shaft with a locking structure, comprising a guide shaft, a groove being formed on a side surface of the guide shaft, a locking structure being provided inside the guide shaft and inside the groove, a limiting mechanism being provided inside the guide shaft for limiting the locking structure, the locking structure comprising:
[0006] A push rod, the push rod passes through the bottom of the guide shaft and is slidably connected to the guide shaft, a return spring is fixed on the inner wall of the guide shaft, and the end of the return spring away from the guide shaft is fixed to the surface of the push rod;
[0007] A connecting rod, which passes through the side of the guide shaft and is slidably connected to the guide shaft, extends to the inner side of the groove, one end of the connecting rod is fixed with a rubber plate, and the other end of the connecting rod is hinged with a support rod, and the end of the support rod away from the connecting rod is hinged to the top of the push rod. By pushing the push rod, the push rod can push the connecting rod to the side away from the push rod through the support rod, and the connecting rod moves with the rubber plate, and the rubber plate can contact the inner side of the linear bearing on the surface of the guide shaft, and the linear bearing stops moving through friction, thereby playing a locking role.
[0008] Preferably, the grooves, connecting rods, rubber plates and support rods are each provided in two groups, and the two groups of grooves, connecting rods, rubber plates and support rods are symmetrically arranged with the center line of the guide shaft as the axis of symmetry.
[0009] Preferably, the limiting mechanism includes a card knife, the card knife passes through the push rod and is slidably connected to the push rod, a connecting spring is fixed to the left side of the push rod, and the end of the connecting spring away from the push rod is fixed to the card knife.
[0010] Preferably, an L-shaped rod is fixed on the inner wall of the guide shaft, and a blocking block is fixed on the end of the L-shaped rod away from the guide shaft. The L-shaped rod passes through the slider and is slidably connected to the slider. When the push rod is pushed upward, the push rod moves upward with the blocking knife. When the blocking knife moves to the position of the blocking block, the blocking knife is resisted by the blocking block and moves to the left. When the blocking knife moves to the top of the blocking block, under the action of the connecting spring, the blocking knife pops out to the right and resists the top of the blocking block, thereby limiting the push rod so that the push rod cannot move downward under the action of the reset spring.
[0011] Preferably, a tension spring is fixed to the top of the slider, and one end of the tension spring away from the slider is fixed to the surface of the L-shaped rod.
[0012] Preferably, an embedding groove that fits with the slider is provided on the top of the card block. When the push rod is pushed upward again, the push rod moves upward with the card knife, and the card knife is moved to the left by the slider. When the card knife moves to the top of the slider, the card knife pops out and hits the top of the slider. At this time, the push rod is released, and under the action of the reset spring, the push rod moves downward with the card knife, and the card knife moves downward against the slider. When the slider is embedded in the inner side of the embedding groove, the slider and the card block form a whole. At this time, the card knife slides to the left along the arc edge of the slider, thereby separating the card knife from the slider and the card block, thereby releasing the limit on the push rod, and the slider is no longer resisted. Under the action of the tension spring, the slider moves upward and resets.
[0013] Compared with the prior art, the present invention provides a guide shaft with a locking structure, which has the following beneficial effects:
[0014] 1. The guide shaft with a locking structure, through the provided locking structure and limiting mechanism, when the linear bearing needs to be locked, only the push rod needs to be pushed upward to control the rubber plate to contact the inner side of the linear bearing, and the linear bearing stops moving through friction, thereby playing a locking role. At the same time, the limiting mechanism can limit the push rod to ensure stability during use.
[0015] 2. When the guide shaft with a locking structure needs to be released from the locked state, it is only necessary to push the push rod upward again, and the limit mechanism can release the limit on the push rod, so that the push rod can move downward under the action of the reset spring, thereby pulling the connecting rod and the rubber plate to reset, thereby releasing the locked state of the linear bearing. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the front view structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the groove structure on the side of the guide shaft of the utility model;
[0018] Figure 3This is a schematic diagram of the partial cross-section of the guide shaft of the utility model;
[0019] Figure 4 For this utility model Figure 3 Middle A is a schematic diagram of the enlarged structure;
[0020] Figure 5 This is a schematic diagram of the top embedding groove structure of the card block of the utility model.
[0021] In the figure: 1. Guide shaft; 2. Groove; 3. Locking structure; 31. Push rod; 32. Return spring; 33. Connecting rod; 34. Rubber plate; 35. Support rod; 4. Limiting mechanism; 41. Clamping knife; 42. Connecting spring; 43. L-shaped rod; 44. Block; 45. Slider; 46. Tension spring; 5. Embedded groove. DETAILED DESCRIPTION
[0022] like Figure 1-Figure 5 As shown, the utility model provides a technical solution: a guide shaft with a locking structure, including a guide shaft 1, a groove 2 is opened on the side of the guide shaft 1, and the rubber plate 34 can be hidden by the groove 2 without affecting the normal sliding of the linear bearing and the normal operation of the guide shaft 1. A locking structure 3 is provided inside the guide shaft 1 and on the inner side of the groove 2, and a limiting mechanism 4 for limiting the locking structure 3 is provided inside the guide shaft 1. The locking structure 3 includes: a push rod 31, a return spring 32, a connecting rod 33, a rubber plate 34, and a support rod 35.
[0023] The push rod 31 passes through the bottom of the guide shaft 1 and is slidably connected to the guide shaft 1. A return spring 32 is fixed on the inner wall of the guide shaft 1. The end of the return spring 32 away from the guide shaft 1 is fixed to the surface of the push rod 31. The connecting rod 33 passes through the side of the guide shaft 1 and is slidably connected to the guide shaft 1. The connecting rod 33 extends to the inner side of the groove 2. A rubber plate 34 is fixed to one end of the connecting rod 33. The other end of the connecting rod 33 is hinged to a support rod 35. The end of the support rod 35 away from the connecting rod 33 is hinged to the top of the push rod 31. By pushing the push rod 31, the push rod 31 can push the connecting rod 33 to move to the side away from the push rod 31 through the support rod 35. The connecting rod 33 moves with the rubber plate 34. The rubber plate 34 can contact the inner side of the linear bearing on the surface of the guide shaft 1, and the linear bearing stops moving through friction, thereby playing a locking role.
[0024] There are two groups of grooves 2, connecting rods 33, rubber plates 34 and support rods 35, and the two groups of grooves 2, connecting rods 33, rubber plates 34 and support rods 35 are symmetrically arranged with the center line of the guide shaft 1 as the symmetry axis.
[0025] The limiting mechanism 4 includes a card knife 41, which passes through the push rod 31 and is slidably connected to the push rod 31. A connecting spring 42 is fixed to the left side of the push rod 31, and the end of the connecting spring 42 away from the push rod 31 is fixed to the card knife 41. An L-shaped rod 43 is fixed on the inner wall of the guide shaft 1, and a card block 44 is fixed to the end of the L-shaped rod 43 away from the guide shaft 1. The L-shaped rod 43 passes through the slider 45 and is slidably connected to the slider 45. A tension spring 46 is fixed to the top of the slider 45, and the end of the tension spring 46 away from the slider 45 is fixed to the surface of the L-shaped rod 43.
[0026] The top of the block 44 is provided with an embedding groove 5 that fits with the slider 45. When the push rod 31 is pushed to move upward, the push rod 31 moves upward with the card knife 41. When the card knife 41 moves to the position of the block 44, the card knife 41 is resisted by the block 44 and moves to the left. When the card knife 41 moves to the top of the block 44, under the action of the connecting spring 42, the card knife 41 pops out to the right and resists the top of the block 44, thereby limiting the push rod 31, so that the push rod 31 cannot move downward under the action of the return spring 32. When the push rod 31 is pushed upward again, the push rod 31 moves upward with the card knife 41, and the card knife 41 is resisted by the slider 45 to move to the left. Move left. When the card knife 41 moves to the top of the slider 45, the card knife 41 pops out and hits the top of the slider 45. At this time, the push rod 31 is released. Under the action of the return spring 32, the push rod 31 moves downward with the card knife 41, and the card knife 41 hits the slider 45 and moves downward together. When the slider 45 is embedded in the inner side of the embedding groove 5, the slider 45 and the card block 44 form a whole. At this time, the card knife 41 slides to the left along the arc edge of the slider 45, thereby separating the card knife 41 from the slider 45 and the card block 44, thereby releasing the limit on the push rod 31, and the slider 45 is no longer hit. Under the action of the tension spring 46, the slider 45 moves upward and resets.
[0027] In the present invention, when in use, when it is necessary to lock the linear bearing sliding on the surface of the guide shaft 1, the push rod 31 is pushed upward, and the push rod 31 pushes the connecting rod 33 to the side away from the push rod 31 through the support rod 35. The connecting rod 33 moves with the rubber plate 34, and the rubber plate 34 can come into contact with the inner side of the linear bearing on the surface of the guide shaft 1, and the linear bearing stops moving through friction, thereby playing a locking role.
[0028] At the same time, the push rod 31 moves upward with the card knife 41. When the card knife 41 moves to the position of the block 44, the card knife 41 is resisted by the block 44 and moves to the left. When the card knife 41 moves to the top of the block 44, under the action of the connecting spring 42, the card knife 41 pops out to the right and resists the top of the block 44, thereby limiting the push rod 31.
[0029] When release is required, the push rod 31 is pushed upward again, and the push rod 31 again pushes the connecting rod 33 through the support rod 35. The connecting rod 33 squeezes the rubber plate 34, causing the rubber plate 34 to deform without affecting the normal upward movement of the push rod 31.
[0030] The push rod 31 is then released, and the push rod 31 is pulled back to its original position by the support rod 35, pulling the connecting rod 33 back to its original position, so that the rubber plate 34 no longer contacts the inner side of the linear bearing, thereby releasing the locking state.
[0031] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.
Claims
1. A guide shaft with a locking structure, comprising a guide shaft (1), characterized in that: A groove (2) is provided on the side of the guide shaft (1), a locking structure (3) is provided inside the guide shaft (1) and inside the groove (2), and a limiting mechanism (4) for limiting the locking structure (3) is provided inside the guide shaft (1), and the locking structure (3) comprises: A push rod (31), the push rod (31) passes through the bottom of the guide shaft (1) and is slidably connected to the guide shaft (1), a return spring (32) is fixed on the inner wall of the guide shaft (1), and the end of the return spring (32) away from the guide shaft (1) is fixed to the surface of the push rod (31); A connecting rod (33) passes through the side of the guide shaft (1) and is slidably connected to the guide shaft (1). The connecting rod (33) extends to the inner side of the groove (2). A rubber plate (34) is fixed to one end of the connecting rod (33). The other end of the connecting rod (33) is hinged to a support rod (35). The end of the support rod (35) away from the connecting rod (33) is hinged to the top of the push rod (31).
2. The guide shaft with a locking structure according to claim 1, characterized in that: The grooves (2), connecting rods (33), rubber plates (34) and support rods (35) are each provided in two groups, and the two groups of grooves (2), connecting rods (33), rubber plates (34) and support rods (35) are both symmetrically arranged with the center line of the guide shaft (1) as the symmetry axis.
3. The guide shaft with a locking structure according to claim 1, characterized in that: The limiting mechanism (4) includes a card knife (41), the card knife (41) passes through the push rod (31) and is slidably connected to the push rod (31), a connecting spring (42) is fixed on the left side of the push rod (31), and the end of the connecting spring (42) away from the push rod (31) is fixed to the card knife (41).
4. The guide shaft with a locking structure according to claim 3, characterized in that: An L-shaped rod (43) is fixed on the inner wall of the guide shaft (1), a clamping block (44) is fixed on one end of the L-shaped rod (43) away from the guide shaft (1), and the L-shaped rod (43) passes through the slider (45) and is slidably connected to the slider (45).
5. The guide shaft with a locking structure according to claim 4, characterized in that: A tension spring (46) is fixed on the top of the slider (45), and one end of the tension spring (46) away from the slider (45) is fixed on the surface of the L-shaped rod (43).
6. The guide shaft with a locking structure according to claim 4, characterized in that: An embedding groove (5) that fits with the slider (45) is provided on the top of the clamping block (44).